The factor I think is huge is glossed over here. The difference between 20mm equivalent and 25mm equivalent. That extra 5mm of “wide” is gigantic and amazingly useful. Rather than a brief mention, this factor needed way more attention. Between the weight difference and the extra width, for me, the pendulum swings toward the 10-25 and makes the price premium worth it.
7 years into shooting, the amount of times I've actually needed or used a 20mm FF equiv focal length throughout the course of things, whether hobby or work, is basically non-existant outside of purely real estate work. In which case 20mm isn't nearly wide enough for real estate - 16-18mm is far more desirable anyway for that.
Like you said in the video, this lens seems targeted at a very specific type of customer. This lens makes sense for me as a hybrid MFT (GH5) shooter because it replaces several of my mft fast primes. It's weather resistant so i can travel and shoot in harsh conditions without having to change out lenses in the field (during a rain storm for example). The AF performance allows me to switch between photos and video on the fly. Instead of carrying several primes in my bag i can now care just this one so the overall weight of my kit bag goes down. Additionally the focus clutch with linear-like control and step-less aperture are huge advantages compared to my older Panasonic fast primes. The relatively high price sucks but worth it for me because of the practical convenience and features. I plan to pick one up early next year.
About C-AF in video, thought I'll put in my 2 cents. I have the GH5, G9 and the Leica 10-25mm. When I first put the lens on, to my surprise C-AF was poor, that is, it didn't even seem to try to pull focus. I then tried the lens on the G9 and the focusing is spot on, no concerns with it at all. Back on the GH5, I tried my 12-35 mk1 and it also didn't attempt to autofocus. After cycling through my Custom modes, I found one mode that allowed continuous autofocus to work very well - both on the 10-25mm and the 12-35mm. Leading me to believe that the 2.5 firmware may have been the issue. Neither my Custom1 or Custom2 modes worked, but my Custom3-2 did (Custom3-1 is VFR).
Please share your settings! I saw a review where 10-25 blows out of water Sigma 18-35 in terms of AF. And since this is truely wide angle lens it is more viable option to me. But I would like to know if this can work reliably with GH5S.
Hi With my GH5 (latest firmware), my 10-25mm makes a little noise when I use AFC in 4k video 30 or 60fps. If I set the AFC setting with speed +5 and sensitivity +3, the noise is louder. Is it normal to get this noise ? Thank you.
What do you mean by "found mode to allow continuous autofocus Custom3-1 is VFR"? Was this set at one of the 8-bit RECORD QUALITY settings? None of the 4K 10-bit settings allow VFR.
This is one of the best, or the best RUclips channel for BMPCC 4K (& GH5) gear reviews! You always answers all my questions without being too technical or too long. Thanks!!!
Great video Gerald. Just wanted to add my thoughts for those still considering these or similar options. I own both combinations so I have no reason to favor one over the other. With that said, the Sigma/MB combo coughing up 5mm on the wide end puts it at a severe disadvantage to the 10-25. Going from 20mm to 50mm (FF equiv) with a turn of the barrel at 1.7 is what you're paying for if you ask me. Also, the glorious Sigma optics takes a hit for sure with that metabones adapter...the sharpness is fine, but there is a significant drop in contrast compared to the 10-25 (you can see it at 8:25 in the video). It should also be noted that the 10-25 suffers from pretty major distortion at the wide end in RAW photo files and video footage that need to be dealt with when processing. For example, those planning to stick this thing on a BMPCC 4K and expecting straight lines when filming buildings etc. at 10mm will be disappointed. I usually only reach for the Sigma combo when bokeh is paramount and that's about it.
I have a sigma 18-35 and a viltrox speed booster. It makes my lumix g7 look like it was a camera that came from heaven with the image quality it gives me. For short films and studio work, it's a must. Plus i can adapt it to my sony a6300. 2 for 1
I have a Sigma Viltrox and GH5. In my opinion is perfect combo. I have used that for 18 months and it is great. Only downside is that 3-4 times camera was stop recording and frozen all menu. To turn down the camera I must had to out the battery. The files were corruppted. Since 2018 I have done many wedings using sigma and gh5, so 3-4 times is not bad. I compared to Leica 15mm and the sigma is a liltlle bit sharper.
Parfocal does not work by focusing wide then expecting it to be in focus zoomed in. It's the other way around. You zoom in, focus, and then expect the 10 to 25 to be in focus throughout the range.
Dan Lowder Thanks, good to know. That’s what we did with the parfocal ENG cameras, as fast as hell we would zoom in, focus, and the pull out as fast as we could to get the shot.
Slam dunk dude! I've been saying all of these points for months once it was revealed the absence of Power O.I.S. Unless you're a hybrid shooter capturing photos and video, there are so many better options out there for the money. Now if this had optical stabilization, this would be a home run replacement for the Lumix 12 - 35 F2.8 paired with the GH5S (no IBIS) that does not have a clutch, making it possible to motor map with a wireless follow focus. Anyway, nice breakdown. Keep fighting the good fight against the "hype monster".
I feel like the 10-25 could replace 3 of my lenses: (8-18), (25 f1.7) and (12-35 f2.8) so I could carry only this one with the (35-100f 2.8). I think that the Sigma is still not wide enough for some applications. I would be curious to vlog with it but AF looks so bad... :/ I will wait to see if MFT can still keep up with the FF world, before buying.
I use the Speedbooster XL with the Sigma, which makes it about 23-44mm or so, which is great. With ex-tele 1.4x crop in 4k and 2x crop in 1080p with the Panasonic G9, it's a very versatile setup. The only issue is the AF speed, which is definitely slower than with a native m43 lens, but it's an okay tradeoff.
@@slows728 Good to know, thank you. I've been giving a lot of thought to the 10-25, just not sure if I can justify the expense in the current economic climate re. covid business disruptions.
Slowskiss I saw you mentioned the 10-25’s noisy AF in another comment. I don’t experience this on my GH5 + 10-25 combo. Do you know of anyone else who’s run into the same issue? *EDIT:* _I just noticed the 30/60fps part. I never use AF in anything but 24fps. I’ll have to try it at higher frame rates and see if mine is noisy too._
as always, amazing amazing in depth review and comparison dude. I was just sitting here thinking, why have I not seen hundreds of videos on this thing - you answered that. Thanks for being awesome.
Exactly right ... also the sigma 18-35mm is the most adaptable lens I own. I have used it on many different systems. Needless to say, I will be keeping it. Thank you for producing another thorough, inciteful, and, informative video.
What impresses me is how well the Sigma 18-35 holds out in comparison to the newer Pany 10-25. The Sigma performed very well overall and maintains its dominance even years after its introduction.
Another great review! I have a GH5 and have used the Sigma with Speedbooster for two years now and have been very pleased with the results. It's heavy I agree but a great look and very sharp lens in my opinion. Thanks for the comparison :-)
I think the reason why you dont get it, is that you underplay the wide end by A LOT. 20-50mm full frame is a BIG deal, and arguably the best range you can get for a video lens, you wont feel very compelled for another lens, while the 18-35 can feel tight at times and need a complimenting lens, which doesnt really exist, no ultrawide fast zoom.
Based on the user I guess. I don't underplay the 20mm, because for me, it's not very useful. I don't like anything wider than 24mm. That's just my preference.
@@geraldundone I understand that you have your personal preference, but I think it is a point which is not given sufficient coverage in your video. The fact that the 10-25mm has a 2.5x zoom capability with f1.7 maximum aperture deserves a bit more screen time. Other than this missed point, it is an excellent video. I enjoyed it, very informative.
First of all, I'd like to say that Gerald's videos are among my favorites in terms of content and production quality. So much work goes into these videos and it shows. With that said, I agree with Charlie N...those extra 5mm on the wide end put the 10-25 in a whole other category than the 18-35. To go from 20mm to a "normal" 50mm with stellar image quality through the zoom range is incredible. Next is that de-clicked aperture ring for video. It's so great in quickly changing lighting conditions...don't have to mess around with an ND filter (if max aperture is not needed). Finally, I was getting poor results when pairing the 18-35 with the Viltrox adapter. There are major problems when shooting wide open away from the center of the frame...there was strange ghosting effects, loss of contrast, and it just didn't look right. So, the 10-25 was an easy decision for me despite the high cost.
Bro your reviews are so in depth in things i dont even care to learn but its awesome learning! Haha love your videos and have been a subscriber for about a year and a half now! Great content!!!
Interesting to re visit this review after a year or so. I had no intention in buying this lens and so just watched it originally for info, however I just picked one up at a silly price here in the UK, so a re visit was needed. I still agree with what you say however as a videographer rather than photographer, this lens makes total sense, the autofocus works great for video and outside it is without doubt the most accurate autofocus lens I have. And the clutch on manual focus is great especially whilst using a wireless focus system ( tilta nano). Must say when I first unboxed it the size and weight almost made me box it straight back up again, but a month later I don’t even notice it in use, I have even balanced it on a Ronin SC. Again great video and as always thank you.
4:10 you say if you focus at 10 mm and go to 25 mm you need to re focus. We used parfocal lenses in college and the rule was always "Zoom in, focus up, pull back." It makes sense if you think about it, if the focus stays the same all the way through why would you not zoom right in as much as you can to get perfect focus from the start instead of starting at 10 mm where it may not be as exact and then zoom in for the close up? This was using huge broadcast cameras so I'm not sure if it will work with this lens but I would be interested to find out if it improves it or not. Great content as usual, thanks Gerald.
Thanks a lot for the review! Love all your videos! I am currently a GH5s, Viltrox EF-M2, Sigma 18-35 shooter and I absolutely love the combination. The only way I would ever purchase the 10-25 is if Panasonic releases the following: Panasonic GH6? - Low light capability of the GH5s (even a bit worse is okay) - IBIS of the GH5 - Phase Detect or comparible auto focus system - Full V-log with 10-bit internally (up to 4K60p) - $2500 or less * Bonus: 4K120p This would make the investment in the lens worth it for sure, but for now I can't see why it's worth picking up the 10-25 over the Sigma/Booster combination.
@@cmdr.shepard I used to use a Zhiyun Crane Plus with my 12-35mm f2.8 but I bought an a6400 with a 18-105 f4 just to sit on my gimbal. I film documentary so it's good to have a camera always on the gimbal like that and the autofocus makes it easier.
@@expatlifekorea9526 I have the 12-35 as my first lens. Im looking for my second lens and I really want to get the Sigma 18-35 but I feel like I'm just buying the same focal length. Would you recommend I sell the 12-35 and buy the Sigma and maybe buy a cheaper prime native lens?
@@Slesaint17 It depends on what kind of stuff you film. If you shoot travel, documentary, or gimbal work then I think the 12-35 is a really essential lens because it's so light. The 18-35 is amazing, but it's so heavy that it's not as practical to just throw in your bag and take with you anywhere. I'd only recommend it over the 12-35 if you don't think the weight will be an issue and you have a gimbal that can handle the setup. If I was in your position, I would buy a Panasonic 35-100mm f2.8 and then you can film basically everything. Then I'd invest in a speedbooster and start buying Canon full frame primes that you can also use on other cameras in the future.
Thank you so much for this video! I was in doubt about these lenses for the BMPCC4K. The Panasonic attracted me for being wider at the wide end than the Sigma, but after these review, the Sigma + Speedbooster is obviously the better deal for video
Great content as always. Two comments: Viltrox 0.71x speedbooster is only $250 (vs $650 Metabones). $500 Canon 17-40L adapted to A7iii via MC-11 is an even better deal (at only 1/3 of the price).
The reason why people pay so much for the Metabones is that it has much better AF implementation (especially AF-C) than the Viltrox. Also, the corners are a bit sharper than the Viltrox.
Sigma 18-35 is my go to lense. I use it almost everytime. The combo 18-35mm + SpeedBooster is even more affordable if you buy the Viltrox EF-M2 which I use.
Hi Gerald and fellow you tubers. I guess I’m chiming in a bit late for anyone to see this but here’s my experience. I only run 1, single main camera (GH5) and my kit has been put together around the mft system. This Leica 10-25 is simply a godsend. Except for gimbal work! I am putting together a video series of walking people through diy boat refurbishing. The thing is, when I’m done with videoing the work I do on the boats, I need quality pictures of the vessel to post and sell the actual watercraft. This lens does both insanely well and with the shutter angle trick and camera updates it’s a wow of a lens ‘for my needs’
Great comparison between these two lenses, and a solid conclusion, too. The Sigma 18-35 has been my go-to lens for quite a while, for both my MFT and Super35 cameras. Great lens as a very affordable price.
10 to 20 mm is an interesting focal range if you like nightscape photography. The Sigma 18-35 with speedbooster reaches, at widest focal, about 13 mm (26 mm equivalent), which is an angle of view way different from the 10 mm (20 mm equivalent) offered by the Panasonic. This is a noticeable difference
Awesome review Gerald! I was been contemplating the 10-25mm and selling my Sigma/MB combo but since you discovered the auto focus issues with video shooting with the 10-25mm, that helped make my decision clear
Great review as always, Gerald. Based on your review, I understand your puzzlement about the Panasonic 10-25mm. BUT I'm an event photographer. The Panasonic 10-25mm is a short fast zoom (equivalent to 20-50mm) which is the perfect range for wedding/event receptions. The Sigma 18mm just isn't wide enough. The 10-25mm would allow me to get quick group shots during cocktail hour, dancing shots, the hora, etc. and have the flexibility of the f1.7 aperture when I want to shoot some non-flash available light stuff - even in a cozy, dark-ish venue like a tiny claustrophobic NYC restaurant. Yes, much of this can be done with the Olympus 12-40 f2.8, but it's only f2.8 and not *quite* wide enough for when the wedding crowd gets a little crazy on the dance floor. It's nice to hear that the continuous AF is good for stills! For me this is valuable when getting the bride and groom running down the aisle out of the church/synagogue. I wouldn't normally need a 10mm for that but sometimes the videographer is too close and crowds me in the aisle... and I have to shoot WIDE. Darn videographers. The Panasonic 10-25mm is on my shopping list.
Great review and comparison. It was very helpful. Often people are too focused on the obligatory sharpness. But there are so many other factors that make a lens what it is. And your comprehensive comparison/demonstration shows how important all the other factors are. Thanks. I was very interested in the new 10-25, but for what I do, the adapted Sigma would be the choice.
i shot with the 10-25mm today, and its.... outstanding. AF is aim and hit. Super quick. Quality is insane. Didn't knew MFT photo's could be THIS sharp... wish I had the 2k moneysss....
The results of this video surprised me! I do have a question though. On our little Panasonic GX80 we noticed we get much better autofocus results in video when using AFF instead of AFC. Would it be too much to ask to test both lenses using AFF and see if it changes the outcome?
I've been testing a lot of lens options recently, and posted the results to my website, and for M43, and as of today (4-16-2022) I think I like the 12-60 range much better, even if it has a variable aperture. To me, the Sigma 18-35 on a .71x focal reducer/speed booster isn't wide or long enough. I then tried the Sigma 17-50 2.8 on the same .71x (Viltrox) focal reducer, and while loved 50mm at the long end, 17mm wasn't wide enough. I may try a .64x focal reducer, but I really think Panasonic finally got it right with the 12-60 options, especially since they offer dual stabilization (IBIS + lens OIS) capabilities.
The 12-60 is very versatile, but the sigma is basically a 12-25 mft range. I find that I almost never need the short end and I end up pushing nearly to 25mm anyway, while I'd like a further distance to focus, so I'm picking up the 25-50mm 1.7 leica today
@@lilzohan7078 Hope it works out well for you, etc. I should mention I'm using the "always shoot with 2 cameras" (that's part of my "Fake Filmmaking" method) so when using the 12-60 I'm always at the WIDE end, and then (on my #2 cam) I have a Nikon 50 with a .71x speed booster for a 35 F1.2 low light tool, etc. When I use 2 cameras I find that it's much easier to pick lenses (as no single lens has to do everything!)
@@silverlightphotoco I myself also use two, sometimes three cameras to achieve the look I want for wedding videography haha! No one lense can do everything, so having a second shooter punched in with the leica nocticron 42.5 1.2 mft lense and me with the sigma 18-35 has been a good combo, although I find myself less and less using the sigma and instead using my $150 25mm 1.7 on a gh5 on a gimbal that works wayyy better than it honestly should at that price haha
I wonder whether the 10-17 might perform better on another camera (G9, OM-D EM-1 Mark II), or be fixed with a firmware upgrade? A video like this, I would like Panasonic to see.
having a 10mm is definitely nice, I think that's the biggest advantage of the lens. No other lens is any other system offer a 20-50mm focal range and I think that's a big selling point, although I happy with my 18-35.
All this shows how good of a lens the old Sigma is. And it fits (at least) 2 sensor sizes, which would make it a no-brainer for me, if I was shopping for a lens like that.
Great video. Thanks Gerald. I think Panasonic released special camera update (GH5/s and G9) to fix autofocus issues with the 10-25. I wonder if the lens would behave differently after the update?
Wow! I had no idea about the par focal issue with the sigma when using the metabones! Already learned something. I'm looking to adjust mine right now. Thanks Gerald!!!
I think you should double check your AF test. I’ve seen the complete opposite in other videos. Something funky going on. Were you on latest firmware on the GH5?
I don't have two versions of the lens to compare, so it's possible mine is a lemon, but it works so well in photo mode that I doubt it. And I'm confident in my AF settings.
Just tested again. Pretty similar results, but I can say that certain focal lengths seem to focus better than others. At 10mm for instance it rarely works, but 25mm performs a bit better. None of them are reliable, but it does vary. 18mm is pretty bad for instance, which is where I did the test in the video.
This video is 3 years old but still brings a good point. Why purchase the Panasonic, when you can invest in a system with Phase Detect Autofocus. I think that 3 years later, seeing the recent success with the S5II, along with the recent hints at a MFT Phase Detect Autofocus camera, your point about a very select amount of people becomes more prominent. I currently use MFT and have no plans on changing, as I believe if Panasonic can make a phase detect MFT camera, it will do very well and will probably convince me to full invest in lenses such as this one, and the 25-50mm f1.7
Gerald, thank you for doing this test. I've been pondering about this new lens and have come to the same conclusion you have. Its nice. But not necessary if you already have the Sig option. I think what would give the Panasonic more value, or interest, if they make a 25 to 50mm(?) f1.7 to be used as a set. As a pair, expensive aside, I might like that much better then the Sig option.
Hi Gerald, fan of your channel and documentary filmmaker from Malaysia! Would love to see you review the new 25-50mm … do please consider ;) Thank you!
I have bought the 10-25 a few days before this test was published. In the shop I have tried the lens as usual (for me) with back button focusing. Which worked fine for me. As Auto Focus is only used when making photographs or as a help in Manual mode I was not aware of this flaw of the lens and camera in video mode. I made a quick test and indeed experienced not a slight trace of auto focus when 'copying' your test. I then tried the same with the 12-35 (rev. 1) and in fact the auto focus was also not working. I have programmed Back Button and halfway shutter release Focus long ago and maybe some setting inadvertently blocks the AF in video mode. Over the past few days I did some video (4k 50p) of events in bright daylight or in a club setting (4k 25p). As I am used to Joy Stick and Back Button I found the lens working fine and the image quality very convincing. Furthermore the manual focus ring is working as a powerful additional tool for manual focusing when a fine adjustment is needed. Additional note: Just made the same test with my GH4 (firmware rev. 2.6) and 10-25 lens (also programmed for BB and half way pressing focus) and the auto focus is working, a little slow however, during video recording (4k 25p). So maybe lack of AF is a problem related to the GH5 (firmware rev. 2.5) and not specifically to the lens (rev. 1.0).
I will state I'm not a professional but my tests do not give the same results at all. I have the GH5 with firm 2.4. AF in video mode is night and day in comparison to other lenses I have. The AF is actually great. Face tracking works so well it doesn't even feel like I'm using the GH5 lol. I have a feeling the firmware is giving you guys issues. I'm not going to update just in case.
@@Highpwrfitness I'm also not a professional. I will experiment with Face Recognition more! In my tests I was using 1-Area and Tracking modes. In the past I had difficulties with Face Recognition during gigs.
Very good comparison between the two. Regarding the flare on the Sigma I'm pretty sure it is because of the booster, at least in my combo when the booster is off, the lens is very good against flare. After using the lens a lot with both (just adapter / speed booster), I find myself using it mostly without the speed booster: it behaves better, it is sharper, more flare resistant. I use the booster in case there's a need to go very wide or in extreme low light.
Man, there's just nothing that quite compares to the 18-35. Every video I watch about it makes me more and more confident that I made a good choice when I bought mine. I can't see where anyone would ever buy the Pany 10-25. At $1,800, terrible autofocus, and has an extending barrel, even if it were (somehow) sharper than the Sigma, it still wouldn't make sense, to me at least. Especially when you can get the 18-35 with the Viltrox EF-M2 for about $750 new right now. Even for photo, I'd recommend a few primes that easily cover the focal range and would outperform the 10-25 in every category. Also, as usual, thank you for these thorough and well-done tests man!
Actually, I saw a video that showed the 10-25 being sharper than several panasonic leica primes at the same focal lengths. But I totally get what you're saying. It seems ridiculous to spend that much on this lens. Im so torn!
Great video, unbiased unlike many others. Thanks. A note though. Even if a lens doesn't extend when zooming, internal parts are moving and change the balance of the lens. So, IMO, there is no real advantage to a zoom not extending. There is a weight shift anyway. And why did you not use the 0.64x SB ? It gives a wider FOV and and even wider aperture at 2.2 (with crops).
The 0.64x speed booster will have vignetting issues on the GH5 at the wide end of the 18-35 lens, from my understanding. In terms of the balancing, you're right that elements are moving around even with internal zooms, but I have seen the argument that the front elements are the heaviest so external zooms become more unbalanced than internal zooms. Plus, internal zooms make more sense if you're going to have stuff at the end of the lens like filters or a matte box or something.
hey gerald thanks for the video! I know you probably don't care about this aspect but did you see any differences in the color rendering between the lenses? thanks a lot!
Late to the game here, wonderful review. But what it really points up is the fact that despite all the options, the Lumix line is still wanting for a high-quality, wide aperture, wide angle zoom lens. And I’ll add, one that is reasonably affordable. I had no trouble finding such lenses on Canon years back. Let’s face it, it really sucks that these two options, neither inexpensive, both have lousy auto focus and lousy manual focus. When is Lumix going to dump the focus by wire?
Nicely done. I bet the edge to edge sharpness is better on the Panny. The flaring on the Sigma may be due to it being adapted via Metabones adding more surface areas for the incoming light to bounce around in?
Very helpful indeed. In that I've got the Sigma although with a Viltrox speed booster - which makes it a hell of a lot less expensive. I've found AF to be not great, even in video, so it's sort of a relief the Panasonic doesn't do it in that respect - which I am surprised by. I do appreciate the shallower DoF of the Sigma - it's a zoom lens that gets close to matching anything I have for the format, whereas the Panasonic as you point out is not even like a premium zoom. In fact while I was considering buying the Panasonic I bought a second hand Sony A7rII, the Tamron 28-75 f2.8 AND a Samyang 18 f2.8 for about the same cost as the 10-25 new. I may be nuts, but I still love my G9. The IBIS makes it good for low light situations without a tripod so long as I don't mind some movement in the shot [which I quite like a lot of the time]. So there are lots of options for your money. I'm afraid I agree that the 10-25 is a very expensive one and doesn't offer enough to justify itself to me. It did surprise me a little bit that there's relatively little difference in weight. The Sigma is a beast and when I handled the 10-25 at a camera fair I was surprised it felt a lot less heavy than I expected. I didn't have the Sigma with me at the time. Perception is a funny thing...
Excellent thorough video! You wanted to hear our thoughts. So after watching this you convinced me that I wouldn't want to use either lens system. Too many issues with both.
As always, thank you Gerald. I've been considering this lens (Panasonic) since it was first announced. I'm surprised, especially about the video autofocus on the Panasonic lens. With the smooth-sliding aperture and all, Panasonic was apparently optimizing it for video. I mean, I would at least expect to see it hunting, but in your test it wasn't even trying to autofocus. I thought I had seen other reviews where it was working pretty well, but it has been a few months and I may have forgotten. Overall, wow, this review is a real black eye for this highly-vaunted and long-awaited Panasonic lens lens.
@@geraldundone P.S. - Thanks for broadcasting in 4K! I just got a 4K monitor, and ALMOST everyone else in my subscription list (exception is Max Yuryev) publishes in HD. My old, bespectacled eyes can actually tell the difference between HD and 4K. Even between 2K and 4K (barely)! Anyway, it makes the viewing that much more pleasurable and I appreciate it.
The factor I think is huge is glossed over here. The difference between 20mm equivalent and 25mm equivalent. That extra 5mm of “wide” is gigantic and amazingly useful. Rather than a brief mention, this factor needed way more attention. Between the weight difference and the extra width, for me, the pendulum swings toward the 10-25 and makes the price premium worth it.
7 years into shooting, the amount of times I've actually needed or used a 20mm FF equiv focal length throughout the course of things, whether hobby or work, is basically non-existant outside of purely real estate work. In which case 20mm isn't nearly wide enough for real estate - 16-18mm is far more desirable anyway for that.
I absolutely love how thorough you are Gerald. Fantastic work as always
Thanks, Levi! 🙏💜
Clearest to-the-point, useful-info-per-second, no-BS video I've seen in a long time. Subscribed.
Useful info per second - YT should use this metric!
THIS is the video I was waiting for! Thank you!
Glad to hear it. Cheers! 😃🙏
I was curious too!
@@geraldundone this is great! right to the point and at a pace that most can follow.
Like you said in the video, this lens seems targeted at a very specific type of customer. This lens makes sense for me as a hybrid MFT (GH5) shooter because it replaces several of my mft fast primes. It's weather resistant so i can travel and shoot in harsh conditions without having to change out lenses in the field (during a rain storm for example). The AF performance allows me to switch between photos and video on the fly. Instead of carrying several primes in my bag i can now care just this one so the overall weight of my kit bag goes down. Additionally the focus clutch with linear-like control and step-less aperture are huge advantages compared to my older Panasonic fast primes. The relatively high price sucks but worth it for me because of the practical convenience and features. I plan to pick one up early next year.
About C-AF in video, thought I'll put in my 2 cents.
I have the GH5, G9 and the Leica 10-25mm.
When I first put the lens on, to my surprise C-AF was poor, that is, it didn't even seem to try to pull focus.
I then tried the lens on the G9 and the focusing is spot on, no concerns with it at all.
Back on the GH5, I tried my 12-35 mk1 and it also didn't attempt to autofocus. After cycling through my Custom modes, I found one mode that allowed continuous autofocus to work very well - both on the 10-25mm and the 12-35mm. Leading me to believe that the 2.5 firmware may have been the issue. Neither my Custom1 or Custom2 modes worked, but my Custom3-2 did (Custom3-1 is VFR).
Please share your settings to address the AF problem
Please share your settings! I saw a review where 10-25 blows out of water Sigma 18-35 in terms of AF. And since this is truely wide angle lens it is more viable option to me. But I would like to know if this can work reliably with GH5S.
Hi
With my GH5 (latest firmware), my 10-25mm makes a little noise when I use AFC in 4k video 30 or 60fps.
If I set the AFC setting with speed +5 and sensitivity +3, the noise is louder.
Is it normal to get this noise ?
Thank you.
@@przybylskipawel I can confirm, the 10-25mm AF is way better than the 18-35mm Sigma. I have the 2.6 firmware on my GH5.
What do you mean by "found mode to allow continuous autofocus Custom3-1 is VFR"? Was this set at one of the 8-bit RECORD QUALITY settings? None of the 4K 10-bit settings allow VFR.
I thought for sure that sooner or later I was going to acquire the 10-25. Then I watched your video. Outstanding work.
Thanks a lot, Tom! Cheers.
This is one of the best, or the best RUclips channel for BMPCC 4K (& GH5) gear reviews! You always answers all my questions without being too technical or too long. Thanks!!!
Great video Gerald. Just wanted to add my thoughts for those still considering these or similar options. I own both combinations so I have no reason to favor one over the other. With that said, the Sigma/MB combo coughing up 5mm on the wide end puts it at a severe disadvantage to the 10-25. Going from 20mm to 50mm (FF equiv) with a turn of the barrel at 1.7 is what you're paying for if you ask me. Also, the glorious Sigma optics takes a hit for sure with that metabones adapter...the sharpness is fine, but there is a significant drop in contrast compared to the 10-25 (you can see it at 8:25 in the video). It should also be noted that the 10-25 suffers from pretty major distortion at the wide end in RAW photo files and video footage that need to be dealt with when processing. For example, those planning to stick this thing on a BMPCC 4K and expecting straight lines when filming buildings etc. at 10mm will be disappointed. I usually only reach for the Sigma combo when bokeh is paramount and that's about it.
I have a sigma 18-35 and a viltrox speed booster. It makes my lumix g7 look like it was a camera that came from heaven with the image quality it gives me. For short films and studio work, it's a must. Plus i can adapt it to my sony a6300. 2 for 1
I just recently bought a used G7. Are you using the Viltrox EF-M2?
Reg Does Stuff your footage does look really good. Makes me wonder why I picked up the GH5!!
@@BhargavaMan yes i am and it work just like a metabones.
I have a Sigma Viltrox and GH5. In my opinion is perfect combo. I have used that for 18 months and it is great. Only downside is that 3-4 times camera was stop recording and frozen all menu. To turn down the camera I must had to out the battery. The files were corruppted. Since 2018 I have done many wedings using sigma and gh5, so 3-4 times is not bad. I compared to Leica 15mm and the sigma is a liltlle bit sharper.
you should upgrade to the metabones, i tested both and viltrox was very blurry
Parfocal does not work by focusing wide then expecting it to be in focus zoomed in. It's the other way around. You zoom in, focus, and then expect the 10 to 25 to be in focus throughout the range.
I can confirm using your method works with this lens without issue.
Dan Lowder Thanks, good to know. That’s what we did with the parfocal ENG cameras, as fast as hell we would zoom in, focus, and the pull out as fast as we could to get the shot.
Proving once again: the most intelligent reviews on the phototube. Good job purple guy.
This review is very helpful for many of us wondering what's all the hype around this "great video lens". Spot on, Gerald, as always!
Slam dunk dude! I've been saying all of these points for months once it was revealed the absence of Power O.I.S. Unless you're a hybrid shooter capturing photos and video, there are so many better options out there for the money. Now if this had optical stabilization, this would be a home run replacement for the Lumix 12 - 35 F2.8 paired with the GH5S (no IBIS) that does not have a clutch, making it possible to motor map with a wireless follow focus. Anyway, nice breakdown. Keep fighting the good fight against the "hype monster".
Intro comment: Wet birds don't fly at night, and neither do I.
that Leica DG 10-25mm is a beast and my dream lens for the GH5 😍
I feel like the 10-25 could replace 3 of my lenses: (8-18), (25 f1.7) and (12-35 f2.8) so I could carry only this one with the (35-100f 2.8). I think that the Sigma is still not wide enough for some applications. I would be curious to vlog with it but AF looks so bad... :/ I will wait to see if MFT can still keep up with the FF world, before buying.
I use the Speedbooster XL with the Sigma, which makes it about 23-44mm or so, which is great. With ex-tele 1.4x crop in 4k and 2x crop in 1080p with the Panasonic G9, it's a very versatile setup. The only issue is the AF speed, which is definitely slower than with a native m43 lens, but it's an okay tradeoff.
The AF is not bad at all. I used the 10-25mm/GH5 combo and the AFC is way better than the Sigma.
@@slows728 Good to know, thank you. I've been giving a lot of thought to the 10-25, just not sure if I can justify the expense in the current economic climate re. covid business disruptions.
@@raksh9 Yes it's an expensive lens but really worth it, the rendering is very nice too. My only issue is the noisy CAF in video with 4K 30/60fps.
Slowskiss I saw you mentioned the 10-25’s noisy AF in another comment. I don’t experience this on my GH5 + 10-25 combo. Do you know of anyone else who’s run into the same issue?
*EDIT:* _I just noticed the 30/60fps part. I never use AF in anything but 24fps. I’ll have to try it at higher frame rates and see if mine is noisy too._
as always, amazing amazing in depth review and comparison dude. I was just sitting here thinking, why have I not seen hundreds of videos on this thing - you answered that. Thanks for being awesome.
Much appreciated, Cody! You're too kind. 😃🙏💜
Exactly right ... also the sigma 18-35mm is the most adaptable lens I own. I have used it on many different systems. Needless to say, I will be keeping it. Thank you for producing another thorough, inciteful, and, informative video.
What impresses me is how well the Sigma 18-35 holds out in comparison to the newer Pany 10-25. The Sigma performed very well overall and maintains its dominance even years after its introduction.
I like that you are impartial and honest. Thank you for the comparison 👍🏼
What a great review, Gerald is so thorough! I also realize the bokeh thing with M4/3 is no big deal to me. It seems very pleasing on all the lenses.
Another great review! I have a GH5 and have used the Sigma with Speedbooster for two years now and have been very pleased with the results. It's heavy I agree but a great look and very sharp lens in my opinion. Thanks for the comparison :-)
You can't beat a 1.1 f stop. You can see in the dark better than your eyes. The Sigma is amazing for keeping stable because the weight helps.
With the release of the GH6, the Sigma with Speedbooster XL is going to be incredible.
I think the reason why you dont get it, is that you underplay the wide end by A LOT. 20-50mm full frame is a BIG deal, and arguably the best range you can get for a video lens, you wont feel very compelled for another lens, while the 18-35 can feel tight at times and need a complimenting lens, which doesnt really exist, no ultrawide fast zoom.
Based on the user I guess. I don't underplay the 20mm, because for me, it's not very useful. I don't like anything wider than 24mm. That's just my preference.
The extra 5mm is a huge difference. For both video and still event shooters, this difference could make the Panny a much better fit.
@@geraldundone I understand that you have your personal preference, but I think it is a point which is not given sufficient coverage in your video. The fact that the 10-25mm has a 2.5x zoom capability with f1.7 maximum aperture deserves a bit more screen time. Other than this missed point, it is an excellent video. I enjoyed it, very informative.
First of all, I'd like to say that Gerald's videos are among my favorites in terms of content and production quality. So much work goes into these videos and it shows.
With that said, I agree with Charlie N...those extra 5mm on the wide end put the 10-25 in a whole other category than the 18-35. To go from 20mm to a "normal" 50mm with stellar image quality through the zoom range is incredible. Next is that de-clicked aperture ring for video. It's so great in quickly changing lighting conditions...don't have to mess around with an ND filter (if max aperture is not needed). Finally, I was getting poor results when pairing the 18-35 with the Viltrox adapter. There are major problems when shooting wide open away from the center of the frame...there was strange ghosting effects, loss of contrast, and it just didn't look right. So, the 10-25 was an easy decision for me despite the high cost.
Great review tx.
Most unexpected RUclips crossover! Do you guys use Panasonic?
I got the sigma 18-35 last black Friday for $525.
This is the video that made me get the Sigma. Was going to go for the Panasonic. Thank you Gerald! The world of speedboosters opened up to me
You are a TRUE RUclips king! What a nice review. Well (un)done, Gerald! Greetings from Copenhagen, Denmark.
Bro your reviews are so in depth in things i dont even care to learn but its awesome learning! Haha love your videos and have been a subscriber for about a year and a half now! Great content!!!
Thanks so much! Really appreciate that. 😃🙏
Interesting to re visit this review after a year or so. I had no intention in buying this lens and so just watched it originally for info, however I just picked one up at a silly price here in the UK, so a re visit was needed. I still agree with what you say however as a videographer rather than photographer, this lens makes total sense, the autofocus works great for video and outside it is without doubt the most accurate autofocus lens I have. And the clutch on manual focus is great especially whilst using a wireless focus system ( tilta nano).
Must say when I first unboxed it the size and weight almost made me box it straight back up again, but a month later I don’t even notice it in use, I have even balanced it on a Ronin SC.
Again great video and as always thank you.
I have the 8-18 panna and I am happy with it...no need for change
Really nice rundown, as a Sony user I don't frankly care, but it's interesting to see what the other companies are making.
Thanks for watching and commenting! Cheers. 😃🙏
Bentley Pascoe my conclusion is don't buy Panasonic 😂
@@bit2easy 😂
4:10 you say if you focus at 10 mm and go to 25 mm you need to re focus. We used parfocal lenses in college and the rule was always "Zoom in, focus up, pull back." It makes sense if you think about it, if the focus stays the same all the way through why would you not zoom right in as much as you can to get perfect focus from the start instead of starting at 10 mm where it may not be as exact and then zoom in for the close up? This was using huge broadcast cameras so I'm not sure if it will work with this lens but I would be interested to find out if it improves it or not. Great content as usual, thanks Gerald.
Thanks a lot for the review! Love all your videos!
I am currently a GH5s, Viltrox EF-M2, Sigma 18-35 shooter and I absolutely love the combination. The only way I would ever purchase the 10-25 is if Panasonic releases the following:
Panasonic GH6?
- Low light capability of the GH5s (even a bit worse is okay)
- IBIS of the GH5
- Phase Detect or comparible auto focus system
- Full V-log with 10-bit internally (up to 4K60p)
- $2500 or less
* Bonus: 4K120p
This would make the investment in the lens worth it for sure, but for now I can't see why it's worth picking up the 10-25 over the Sigma/Booster combination.
@@cmdr.shepard I used to use a Zhiyun Crane Plus with my 12-35mm f2.8 but I bought an a6400 with a 18-105 f4 just to sit on my gimbal. I film documentary so it's good to have a camera always on the gimbal like that and the autofocus makes it easier.
@@expatlifekorea9526 I have the 12-35 as my first lens. Im looking for my second lens and I really want to get the Sigma 18-35 but I feel like I'm just buying the same focal length. Would you recommend I sell the 12-35 and buy the Sigma and maybe buy a cheaper prime native lens?
@@Slesaint17 It depends on what kind of stuff you film. If you shoot travel, documentary, or gimbal work then I think the 12-35 is a really essential lens because it's so light. The 18-35 is amazing, but it's so heavy that it's not as practical to just throw in your bag and take with you anywhere. I'd only recommend it over the 12-35 if you don't think the weight will be an issue and you have a gimbal that can handle the setup.
If I was in your position, I would buy a Panasonic 35-100mm f2.8 and then you can film basically everything. Then I'd invest in a speedbooster and start buying Canon full frame primes that you can also use on other cameras in the future.
Thank you so much for this video! I was in doubt about these lenses for the BMPCC4K. The Panasonic attracted me for being wider at the wide end than the Sigma, but after these review, the Sigma + Speedbooster is obviously the better deal for video
Great content as always. Two comments:
Viltrox 0.71x speedbooster is only $250 (vs $650 Metabones).
$500 Canon 17-40L adapted to A7iii via MC-11 is an even better deal (at only 1/3 of the price).
The reason why people pay so much for the Metabones is that it has much better AF implementation (especially AF-C) than the Viltrox. Also, the corners are a bit sharper than the Viltrox.
Sigma 18-35 is my go to lense. I use it almost everytime. The combo 18-35mm + SpeedBooster is even more affordable if you buy the Viltrox EF-M2 which I use.
Honest and concise. Thank you.
My pleasure. Thanks for the kind words. 😃
Hi Gerald and fellow you tubers. I guess I’m chiming in a bit late for anyone to see this but here’s my experience. I only run 1, single main camera (GH5) and my kit has been put together around the mft system. This Leica 10-25 is simply a godsend. Except for gimbal work! I am putting together a video series of walking people through diy boat refurbishing. The thing is, when I’m done with videoing the work I do on the boats, I need quality pictures of the vessel to post and sell the actual watercraft. This lens does both insanely well and with the shutter angle trick and camera updates it’s a wow of a lens ‘for my needs’
I agree, there is no comparison with the Sigma, the rendering is far better on the Leica, and the CAF too.
Great comparison between these two lenses, and a solid conclusion, too. The Sigma 18-35 has been my go-to lens for quite a while, for both my MFT and Super35 cameras. Great lens as a very affordable price.
10 to 20 mm is an interesting focal range if you like nightscape photography. The Sigma 18-35 with speedbooster reaches, at widest focal, about 13 mm (26 mm equivalent), which is an angle of view way different from the 10 mm (20 mm equivalent) offered by the Panasonic. This is a noticeable difference
Awesome review Gerald! I was been contemplating the 10-25mm and selling my Sigma/MB combo but since you discovered the auto focus issues with video shooting with the 10-25mm, that helped make my decision clear
The 10-25mm has no AF issue. I tested both lenses and the 10-25mm AF is far better. I think this video needs an update.
@@slows728 I think u need to an updated video on this 🙏
Great review as always, Gerald.
Based on your review, I understand your puzzlement about the Panasonic 10-25mm.
BUT
I'm an event photographer. The Panasonic 10-25mm is a short fast zoom (equivalent to 20-50mm) which is the perfect range for wedding/event receptions. The Sigma 18mm just isn't wide enough. The 10-25mm would allow me to get quick group shots during cocktail hour, dancing shots, the hora, etc. and have the flexibility of the f1.7 aperture when I want to shoot some non-flash available light stuff - even in a cozy, dark-ish venue like a tiny claustrophobic NYC restaurant.
Yes, much of this can be done with the Olympus 12-40 f2.8, but it's only f2.8 and not *quite* wide enough for when the wedding crowd gets a little crazy on the dance floor.
It's nice to hear that the continuous AF is good for stills! For me this is valuable when getting the bride and groom running down the aisle out of the church/synagogue. I wouldn't normally need a 10mm for that but sometimes the videographer is too close and crowds me in the aisle... and I have to shoot WIDE. Darn videographers.
The Panasonic 10-25mm is on my shopping list.
My thoughts wrapped in actual proofs and spiced up with your Undoneness. Thank you!
Great review and comparison. It was very helpful. Often people are too focused on the obligatory sharpness. But there are so many other factors that make a lens what it is. And your comprehensive comparison/demonstration shows how important all the other factors are. Thanks. I was very interested in the new 10-25, but for what I do, the adapted Sigma would be the choice.
Hey! Appreciate that. Thanks a lot.
I was waiting for this comparison - Gerald you came in clutch as per 🔥
😃🙏
“Pulling in and out was not reliable at all” 😂 That made me laugh so hard
Absolutely outstanding review. You are the man Gerald 👍
i shot with the 10-25mm today, and its.... outstanding. AF is aim and hit. Super quick. Quality is insane. Didn't knew MFT photo's could be THIS sharp... wish I had the 2k moneysss....
The results of this video surprised me! I do have a question though. On our little Panasonic GX80 we noticed we get much better autofocus results in video when using AFF instead of AFC. Would it be too much to ask to test both lenses using AFF and see if it changes the outcome?
I've been testing a lot of lens options recently, and posted the results to my website, and for M43, and as of today (4-16-2022) I think I like the 12-60 range much better, even if it has a variable aperture. To me, the Sigma 18-35 on a .71x focal reducer/speed booster isn't wide or long enough. I then tried the Sigma 17-50 2.8 on the same .71x (Viltrox) focal reducer, and while loved 50mm at the long end, 17mm wasn't wide enough. I may try a .64x focal reducer, but I really think Panasonic finally got it right with the 12-60 options, especially since they offer dual stabilization (IBIS + lens OIS) capabilities.
The 12-60 is very versatile, but the sigma is basically a 12-25 mft range. I find that I almost never need the short end and I end up pushing nearly to 25mm anyway, while I'd like a further distance to focus, so I'm picking up the 25-50mm 1.7 leica today
@@lilzohan7078 Hope it works out well for you, etc. I should mention I'm using the "always shoot with 2 cameras" (that's part of my "Fake Filmmaking" method) so when using the 12-60 I'm always at the WIDE end, and then (on my #2 cam) I have a Nikon 50 with a .71x speed booster for a 35 F1.2 low light tool, etc. When I use 2 cameras I find that it's much easier to pick lenses (as no single lens has to do everything!)
@@silverlightphotoco I myself also use two, sometimes three cameras to achieve the look I want for wedding videography haha! No one lense can do everything, so having a second shooter punched in with the leica nocticron 42.5 1.2 mft lense and me with the sigma 18-35 has been a good combo, although I find myself less and less using the sigma and instead using my $150 25mm 1.7 on a gh5 on a gimbal that works wayyy better than it honestly should at that price haha
@@lilzohan7078 Nice! Just subscribed to your channel to "follow" your progress on this, and do you have a Twitter, Facebook and/or Instagram, etc.?
@@silverlightphotoco oh thanks man! Our channel is on a different page - here I'll reply to it with it now!
I wonder whether the 10-17 might perform better on another camera (G9, OM-D EM-1 Mark II), or be fixed with a firmware upgrade?
A video like this, I would like Panasonic to see.
I've seen other reviews that had better AF performance, but they were using the G9. So perhaps that is the difference.
Would love to see how the AF works, now firmware 2.6 has released.
The details we need, from the right person to do it. 🔥🔥🔥
I already own the 18-35 and the speedbooster, but I like seeing that I made the right choice lol
A great summation! You verified my thoughts. 🙏🏾
Completely agree with your opinion, thanks another great one video!
Good test and that was my first tought too compare both...thx a lot!
😃👍
having a 10mm is definitely nice, I think that's the biggest advantage of the lens. No other lens is any other system offer a 20-50mm focal range and I think that's a big selling point, although I happy with my 18-35.
I can see that. For me, I never go wider than 24mm, so the 18-35mm is basically just 2/3rds faster option for me.
All this shows how good of a lens the old Sigma is. And it fits (at least) 2 sensor sizes, which would make it a no-brainer for me, if I was shopping for a lens like that.
Awesome review, Gerald! Best from Copenhagen.
good stuff !!! as usual solid content in a good container!
Thanks! 😃
Awesome comparison. You made up my mind for me
Great video. Thanks Gerald. I think Panasonic released special camera update (GH5/s and G9) to fix autofocus issues with the 10-25. I wonder if the lens would behave differently after the update?
Wow! I had no idea about the par focal issue with the sigma when using the metabones! Already learned something. I'm looking to adjust mine right now. Thanks Gerald!!!
I think you should double check your AF test. I’ve seen the complete opposite in other videos. Something funky going on. Were you on latest firmware on the GH5?
He said he was on the latest firmware, but I agree, something definitely seems wrong.
I did it 5 times with different AF settings each time and I mention in the video I'm using the latest firmware. Time: 5:37
I don't have two versions of the lens to compare, so it's possible mine is a lemon, but it works so well in photo mode that I doubt it. And I'm confident in my AF settings.
Just tested again. Pretty similar results, but I can say that certain focal lengths seem to focus better than others. At 10mm for instance it rarely works, but 25mm performs a bit better. None of them are reliable, but it does vary. 18mm is pretty bad for instance, which is where I did the test in the video.
@@geraldundone If this is true then I might just cancel my pre-order.
Solid review Gerald, really do like that 18-35 defo on my to get list
7:19 "Pulling in and out was not reliable at all." *snicker*
If your pull out game is strong, its reliable 😏
Excellent review! Best I've seen!
This video is 3 years old but still brings a good point. Why purchase the Panasonic, when you can invest in a system with Phase Detect Autofocus. I think that 3 years later, seeing the recent success with the S5II, along with the recent hints at a MFT Phase Detect Autofocus camera, your point about a very select amount of people becomes more prominent. I currently use MFT and have no plans on changing, as I believe if Panasonic can make a phase detect MFT camera, it will do very well and will probably convince me to full invest in lenses such as this one, and the 25-50mm f1.7
oh yes baby
love the Sigma + Speed Booster combo, Great video Gerald!!
Gerald, thank you for doing this test. I've been pondering about this new lens and have come to the same conclusion you have. Its nice. But not necessary if you already have the Sig option. I think what would give the Panasonic more value, or interest, if they make a 25 to 50mm(?) f1.7 to be used as a set. As a pair, expensive aside, I might like that much better then the Sig option.
Did you said afc is working with that metabones + sigma combo? I thought afc is useless with that combo
Hi Gerald, fan of your channel and documentary filmmaker from Malaysia! Would love to see you review the new 25-50mm … do please consider ;) Thank you!
I have bought the 10-25 a few days before this test was published. In the shop I have tried the lens as usual (for me) with back button focusing. Which worked fine for me. As Auto Focus is only used when making photographs or as a help in Manual mode I was not aware of this flaw of the lens and camera in video mode. I made a quick test and indeed experienced not a slight trace of auto focus when 'copying' your test.
I then tried the same with the 12-35 (rev. 1) and in fact the auto focus was also not working.
I have programmed Back Button and halfway shutter release Focus long ago and maybe some setting inadvertently blocks the AF in video mode.
Over the past few days I did some video (4k 50p) of events in bright daylight or in a club setting (4k 25p). As I am used to Joy Stick and Back Button I found the lens working fine and the image quality very convincing. Furthermore the manual focus ring is working as a powerful additional tool for manual focusing when a fine adjustment is needed.
Additional note: Just made the same test with my GH4 (firmware rev. 2.6) and 10-25 lens (also programmed for BB and half way pressing focus) and the auto focus is working, a little slow however, during video recording (4k 25p). So maybe lack of AF is a problem related to the GH5 (firmware rev. 2.5) and not specifically to the lens (rev. 1.0).
I will state I'm not a professional but my tests do not give the same results at all. I have the GH5 with firm 2.4. AF in video mode is night and day in comparison to other lenses I have. The AF is actually great. Face tracking works so well it doesn't even feel like I'm using the GH5 lol. I have a feeling the firmware is giving you guys issues. I'm not going to update just in case.
@@Highpwrfitness I'm also not a professional. I will experiment with Face Recognition more! In my tests I was using 1-Area and Tracking modes. In the past I had difficulties with Face Recognition during gigs.
This is a thorough review. Nice job!
Such a great video man. Thanks!
Very good comparison between the two. Regarding the flare on the Sigma I'm pretty sure it is because of the booster, at least in my combo when the booster is off, the lens is very good against flare. After using the lens a lot with both (just adapter / speed booster), I find myself using it mostly without the speed booster: it behaves better, it is sharper, more flare resistant. I use the booster in case there's a need to go very wide or in extreme low light.
Man, there's just nothing that quite compares to the 18-35. Every video I watch about it makes me more and more confident that I made a good choice when I bought mine. I can't see where anyone would ever buy the Pany 10-25. At $1,800, terrible autofocus, and has an extending barrel, even if it were (somehow) sharper than the Sigma, it still wouldn't make sense, to me at least. Especially when you can get the 18-35 with the Viltrox EF-M2 for about $750 new right now. Even for photo, I'd recommend a few primes that easily cover the focal range and would outperform the 10-25 in every category. Also, as usual, thank you for these thorough and well-done tests man!
Actually, I saw a video that showed the 10-25 being sharper than several panasonic leica primes at the same focal lengths. But I totally get what you're saying. It seems ridiculous to spend that much on this lens. Im so torn!
the leica 10-25 is a much better lens than this video made it seem
like allways ! the most usefull video on youtube for filmakers ! thanks!
Seems like you nailed it. Great review.
Does there exist any sort of adapter to use a MFT lens on a full frame camera?
Would be interesting to see if any of that CA on the sigma is from the speed booster
Great video mate!
Very timely video for me. Thankyou.
Thanks for the comparison. Was wondering how these two stacked up.
Great video, unbiased unlike many others. Thanks. A note though. Even if a lens doesn't extend when zooming, internal parts are moving and change the balance of the lens. So, IMO, there is no real advantage to a zoom not extending. There is a weight shift anyway. And why did you not use the 0.64x SB ? It gives a wider FOV and and even wider aperture at 2.2 (with crops).
The 0.64x speed booster will have vignetting issues on the GH5 at the wide end of the 18-35 lens, from my understanding.
In terms of the balancing, you're right that elements are moving around even with internal zooms, but I have seen the argument that the front elements are the heaviest so external zooms become more unbalanced than internal zooms. Plus, internal zooms make more sense if you're going to have stuff at the end of the lens like filters or a matte box or something.
Yeah, as said, the 0.64x has some vignetting on the 18-35mm. It's fine on the full frame glass though.
hey gerald thanks for the video! I know you probably don't care about this aspect but did you see any differences in the color rendering between the lenses? thanks a lot!
Late to the game here, wonderful review. But what it really points up is the fact that despite all the options, the Lumix line is still wanting for a high-quality, wide aperture, wide angle zoom lens. And I’ll add, one that is reasonably affordable. I had no trouble finding such lenses on Canon years back. Let’s face it, it really sucks that these two options, neither inexpensive, both have lousy auto focus and lousy manual focus. When is Lumix going to dump the focus by wire?
Nicely done. I bet the edge to edge sharpness is better on the Panny. The flaring on the Sigma may be due to it being adapted via Metabones adding more surface areas for the incoming light to bounce around in?
Very helpful indeed. In that I've got the Sigma although with a Viltrox speed booster - which makes it a hell of a lot less expensive. I've found AF to be not great, even in video, so it's sort of a relief the Panasonic doesn't do it in that respect - which I am surprised by. I do appreciate the shallower DoF of the Sigma - it's a zoom lens that gets close to matching anything I have for the format, whereas the Panasonic as you point out is not even like a premium zoom.
In fact while I was considering buying the Panasonic I bought a second hand Sony A7rII, the Tamron 28-75 f2.8 AND a Samyang 18 f2.8 for about the same cost as the 10-25 new. I may be nuts, but I still love my G9. The IBIS makes it good for low light situations without a tripod so long as I don't mind some movement in the shot [which I quite like a lot of the time]. So there are lots of options for your money. I'm afraid I agree that the 10-25 is a very expensive one and doesn't offer enough to justify itself to me.
It did surprise me a little bit that there's relatively little difference in weight. The Sigma is a beast and when I handled the 10-25 at a camera fair I was surprised it felt a lot less heavy than I expected. I didn't have the Sigma with me at the time. Perception is a funny thing...
Excellent thorough video! You wanted to hear our thoughts. So after watching this you convinced me that I wouldn't want to use either lens system. Too many issues with both.
Good video I learned alot about lens.
Thanks! 😃
blows my mind that a 6-year-old lens keeps up with a brand new design, or even outperforms it in many ways
there are 40 year old vintage lenses that can hold up, so you might get surprised more often ;)
Where can I get that tiny little screwdriver to make the adjustments to the metabones adapter?
Could be than Should be. Nice line.
The full frame DOF comparison is probably zooms for zooms isn't it? I guess it probably would stack up similarly to like a 24-70 in that regards.
you are definitely one of a kind, gerald!
awesome stuff thank you!
Great video. Gerald is keeping it real.
As always, thank you Gerald. I've been considering this lens (Panasonic) since it was first announced. I'm surprised, especially about the video autofocus on the Panasonic lens. With the smooth-sliding aperture and all, Panasonic was apparently optimizing it for video. I mean, I would at least expect to see it hunting, but in your test it wasn't even trying to autofocus. I thought I had seen other reviews where it was working pretty well, but it has been a few months and I may have forgotten. Overall, wow, this review is a real black eye for this highly-vaunted and long-awaited Panasonic lens lens.
Yeah, agreed. Unless mine is a lemon. But I would be surprised by that considering it was sent to me from Panasonic specifically.
@@geraldundone P.S. - Thanks for broadcasting in 4K! I just got a 4K monitor, and ALMOST everyone else in my subscription list (exception is Max Yuryev) publishes in HD. My old, bespectacled eyes can actually tell the difference between HD and 4K. Even between 2K and 4K (barely)! Anyway, it makes the viewing that much more pleasurable and I appreciate it.
Ha. Nice! 😃👍