Yo at 8:05, you have 60p footage with a 1/50th s shutter speed. With a shutter angle greater than 360 degrees, wouldn't the camera actually be recording at a lower framerate? If the camera actually opted to actually record at 30p 1/50, then naturally that would look similar to the 24p 1/50 footage. Or is this mislabeled and the shutter should be 1/60 of a second?
It's possible on some cameras to do this. All that appears to happen is some frames just repeat. So it's a bit jerkier, but the motion blur is the same.
@@geraldundone I mean we can't tell when watching the video because it's a 24p project, but is that clip somehow shot on a camera where it isn't jerky at 60p 1/50? I assume you shot it on the a7s3 right?
@@thatcherfreeman Initially I was bother by this too as it's not physically possible. But then I remembered that years ago when I used to have a d5300 DSLR I was able to shoot 24fps at super low shutter speed. The end result was just some extremely blurred images while having duplicated frames, like Gerald mentioned.
Great video Gerald, Congrats! In wedding we use 50p all the time with 1/50 shutter (in 25p timeline editing) because we don't know what moment should we put in a slow mo in editing, but we want to the normal speed record sections have a natural blur. We know the slow-mo sections have to much blur, but is a much better compromise than the normal speed sections have not enough motion blur. Moreover in that way the 50p record in 25p timeline with 1/50 shutter in normal speed (droping every second frame) looks excatly the same as a 25p with 1/50 shutter record, but the whole wedding is slow-mo capable if you need it. (We are in Europe and we use PAL format, this method won't work with NTSC 60p/24p combination)
@@geraldundone maybe, but i'm a big fan of the 1/50 shutter motion blur, I don't want to ride of it, but it worth a try in some test shoots, we will see how it looks :)
Thanks for having me chime in Gerald! It was super interesting to try to erase the obvious bias that I have and actually choose which one looked the most NATURAL to me. And its also interesting to note that the one that looked the most NATURAL isn't the one I would prefer to shoot at because of the "soap opera" effect. I always felt like the soap opera thing made me feel like I was standing beside the camera op. This obviously makes it feel more real but it's also the reason I don't like it as much.
I have always shot everything at 60 fps but with the 180degree rule because I detest motion blur when panning and moving around, it is very distracting. This way my videos having twice the information and frames are crisp and sharp even when there is a lot of movement in the scene. I can also slo-mo or speed ramp things. I will now try at the 1/60 shutter to see if that stays sharp while reducing the so-called soap-opera effect. 24p is old school and technology has changed enormously over the years. Cinematic my ass....
@@Pfagnan different use cases. News, sports, live TV spots, vacation footage, are all meant to look like real life, and the realistic look of 60p (or even 30i, but not so much 30p) is desirable for those situations, but if you want your production to look like a movie, those frame rates tend to spoil the "movie" look. You can avoid excessive motion blur and stuttering at those lower frame rates by using wider focal lengths and moving your camera more slowly.
Such a helpful video. I’ve always used the 180-degree rule but never thought to experiment with lower shutter speeds with higher frame rates played back at those higher frame rates. This should be a must-watch for anyone uploading a video to RUclips.
THANK YOU !, I've tried to explain this to soooo...many people in the past I've given up, no one understands but it's all based on math and time which never changes no matter what the frame rate.. amazing video man !!!!
so many other videos talk about the shutter speed like it's the most important decision you will ever make in your life... This video really helped put it into a more reasonable perspective for the average video creator. I'm glad to know that 60 @ 1/60 works well for real time, because at 1/120 my camera gets too dark. I should have just trusted my eyes and realized at 1/60 it looks good, but all these people treating the 180 degree rule like it's a commandment got in my head and misguided me lol.
When you think about it, it should be obvious. As he said in the video, the only thing that determines motion blur is the shutter speed. So knowing that, if your goal is to get the tradtional "cinematic" (whatever that means) motion blur of 1/48(50), then you simply keep your shutter speed the same 1/48(50) regardless of what framerate you shoot in.
A key detail is if you're trying to stabilise footage, you need a faster exposure so all frames are sharper. Otherwise you end up with a weird 'blur' effect on the object that has been stabilised. It looks a bit like it is vibrating from bass as you get motion blur on something that isn't moving any more.
GERALD! you've done it man!!! I can 100% believe it. As an old school sub that believed in you from the days of ideas from a hat. Pre 1000 subs. I want to sincerely congratulate you on finding your niche and keeping with it. Well done. ❤️
If your footage is a blurry mess, then don't just try and take a guess. Hop on over to crazy Undone, where spinning rulers are loads of fun. Find your shutter speed and your rate, don't leave your filming up to fate. Its where Gerald has done all the work, so in the comments don't be a jerk. Thank you Gerald for putting in the time, steeling your knowledge feels like a crime. The more you do the more we watch, because your videos are always tippy-top notch!
Thanks Gerald, you're the only guy on RUclips to explain this properly. I couldn't find anyone else to answer what makes the major difference to motion blur - is it frame rate or shutter speed? - and you answered it as the first question.
Thanks, Gerald! Those of us with a stills background, and therefore no superstitious attachment to the 180° rule, suspected this all along. Understanding shutter speed from the perspective of video *and* stills - and using evidence, rather than just tradition - is definitely worthwhile to better inform creative decisions.
I thank you so deeply for this video. You have no idea the level of vindication/validation this brings. I've felt like I've been screaming into the void for so long about this, it's insane. Another thing to note is that for footage that's going to be speed ramped like 60 in a 24, it's more important to conserve the "real-time" motion blur by using the lower shutter speed than it is to get the slow-mo blur correct. 4:35, I agree it IS small, but that difference between 1/50 and 1/60 is what can make or break 30p when comparing it to 24p's so-called "cinematic" qualities. IMO 30p 1/50th is the goat, and the icing on the cake is that it'll shoot in any country without the lights flickering. If I really need to shoot a low frame rate, I'll drop down to 25p and probably a 1/40th shutter, but that's my limit. 50p 1/60th is the single most versatile IMO, and also the best-looking HFR combo to be played in an HFR timeline. I wish 40fps was a thing that existed and had platform/editing-level support for real-time playback, though. 40 is a direct middle ground between 30 and 60, mathematically (24 to 30 is an 8.33ms reduction between frames, and 30 to 40, as well as 40 to 60 is the same reduction again, each time.) and it should theoretically look almost indistinguishable from real life while saving even further on space than 50 compared to 60. 40fps 1/50th would also be another "universal anti-flicker" rate, too, and would have the best balance between lifelike motion smoothness and natural motion blur in my opinion. However it does lean on the realism side quite heavily compared to 24p's fully artistic look and 30p's balanced look, with 60p looking "hyper-real" sometimes as if it's trying too hard, and that's _including_ having the correct 1/60th "open" shutter speed for natural HFR motion blur.
Another thing I want to know is why iPhonedo's video portion looks so choppy compared to yours. I assume he's shooting 24p and 1/50th like most filmmaker channels do, and I've been narrowing down the "why?" to this desynchronied/laggy 24p look vs how some people make it look smooth over the last few months. It's either the resolution(1080 vs 4k), all intra-frame vs "ipb", 23.976 getting turned into true 24 (or a mismatch between filming/editing/exporting without interpretation), or it's just the codec used to film. With a weighting of 35%, 35%, 20%, and 10% respectively on which one I think is doing it. So what do you think it is, and what insight can you give me on his settings vs yours?
Great video, Gerald! I think it would have been interesting to make it a blind test for the other youtubers. P.S. DPreview was the most insightful of the bunch, in my opinion
I think Jordan Drake’s comment on using 60p at 1/60th was the key takeaway here. With shutter speed determining blur and frame rate determining how we actually perceive that blur, the choice then comes down to the filmmaker. There’s no right or wrong answer, there’s simply “What are you trying to achieve?”. It’s maybe a little bit like a photographer asking what’s the right shutter speed and aperture combination? You can tell them the Sunny 16 Rule, or F8 and Be There... but they’re just guidelines for adequate exposure or focus. If you want to master your craft, then understand the effects of each variable, and make a considered choice. Also, be willing to have fun, take risks and experiment!
Its criminal how much recognition you don't receive. You articulate so well and with such detail that could tell me the grass is orange and I'd believe it true. Also; Next into - I'm Gerald Undone and I'm done ungeralding.
This was great! I can't imagine how many times you jacked up the impossible numbers dialog! Also- I only had to pause this 3 times to get it! That's a huge win for you. As always- thanks for the quality and relevant work...
FANTASTIC!! I’ve been wondering about this ever since learning the rule. Tried experiments etc. This was a great discussion and great way to test it! Thanks for doing this Gerald!
super super helpful, I always render at 60fps and used a shutter of 1/100 because 1/120 caused a visible flicker due to my lights. I always thought I had to use 180°, now I know better. I mean, I actually want the soap opera for my own videos but now I'm definitely also gonna try 1/60 next time shooting a video. Thanks so much, always learning something actually very useful here on this channel, big thumbs up
Having tried 60fps 1/60s a few times, it’s so immersive that it’s almost unnerving (in a refreshing way). I don’t know if many movies would want to use that, but for more “documentary” types of videos, it should work very well. (I am using the word very loosely - I include videos of myself playing the piano or the guitar under that term.)
If you are not in USA, Canada or Japan(i think) you should be using 25, 50 and 100FPS. So need to change your format to PAL, this will stop the flickering
@@TangerineTux For sure, I experimented with filming my piano playing at 60 fps with 1/60s shutter, and honestly, it's the first time that I looked at the playback and it actually looked real. 180 degree shutter, especially at 60 fps, doesn't look real. Cinematic doesn't mean real; it means cinematic.
This video is so personally satisfying. Many years ago I got tired of listening to all these rules when filming. So, I did my own tests and fell in love with with 48fps at 60 shutter. No client has ever noticed/complained. Looks good to me, and that's all that matters.
And just like that... you gave me a new way to think about shooting in 60p knowing some of it will be played back on a 24fps timeline, at normal/real-time speed (dropping frames). I always follow the 180 rule, and then hate the real-time segments for being too choppy. I’m going to experiment to see if I’m OK with the extra motion blur on the slo-mo in exchange for smoother-looking real-time. (The joys of having just one camera... and only one take... choosing a shooting frame rate, and having to live with it for both slo-mo and real-time during playback)
Lately in post production, I constantly come across the use of slow motion (at 60fps or 120fps ) that is time remapped to go fast then slow then fast (think Guy Ritchie style). I often times have to add fake motion blur to reduce the choppyness on the sped up remaps. Great video G.
Great video. There is so much nonsense talked about this topic, with many pundits failing to account for the project settings, and blaming judder on the frame rate, when all the time it is a mismatch between shooting frame rate and project frame rate. You deal wi9th this correctly, and supply very convincing evidence.
Gerald, it absolutely floors me that a high quality resource such as yourself has not absolutely blown up into the millions. It’s only a matter of time. Enjoy and Thank you!!!
I wonder if setting up the drill so it was pointing towards the ceiling and shooting above/below would had been smoother, no ramping speed for the nitpickers. Though, I don't think the way it was done was a problem, and having slight different speeds helped get different blur conditions.
Thanks a bunch you crazy number person G. The 180 deg shutter rule gives us a good guideline to maintain what we are conditioned to perceive as "natural" and "cinematic" look. At the end of the day film makers can do whatever they want. I follow a loose version of the rule where a lower shutter angle is for dramatic action sequence and higher shutter angle for more dreamy smooth effect. It is also worth noting that your edit fps determines the final "smoothness" of the film so you need to ajdust your shutter speed with consideration of your editing fps, if it is going to be different. For example, I shoot 50fps 1/100 in a live show setting where I do not want to be changing camera settings due to the lack of control of the situation and unpredictability of the moments, then edit in a 25fps timeline for faster workflow, will yield a final shutter angle of 90 degrees. That angle is half of 180 which makes the scene more action packed and jarring. Addtionally, I reserve the "right" amount of motion blur expected from a fast moving object if I choose to slow down by 50%. Even If I don't use a slowmo at all, shooting at 25fps 1/100 is not that beneficial to me because my camera somehow produces the same file size regardless of what fps I shoot.
He completely ignored the point about 24 fps footage on 60Hz displays though because it kind of makes any material recorded as 24 fps look like crap no matter the shutter speed. Unless you have a display capable of true 24/48 fps.
Excellent job Gerald. The only major thing unaccounted for in this overview is the speed of the object. Using a 360 shutter angle while shooting 60 fps or 120 fps can be very advantageous (as you can increase your exposure for low light, prevent gitter in extremely slow moving objects etc). I would advise the following caveat; if you need more light and your filming slower moving objects at high frame rates, you can most certainly slow down the shutter speed and get excellent results. I am glad to see someone has finally put this to the test.
Fantastic video Gerald like all your videos but this one in particular is a really simplified visual representation of a rather complex filming technicality and you have articulated it in an easy to understand demonstration With definitive answers
I have been using the 180 rule on all my vids, but am now going to make adjustments for higher frame rates and slowed down vids. Thanks for those two suggestions. Sure wish I had half of your knowledge...I might actually know what I am doing. Great stuff Gerald!!
I like your presentation method. Arguments (opening statements), questions in order to answer those arguments and closing remarks. I don't even understand what you're trying to explain here anyway, but definitely it works. I mean, there must be a physic rules to explain this, but I'm just too dumb for this. Good work anyway
A key thing not really discussed is the camera and subject's relative motion to each other. So for instance, I shoot interiors videos. With slow camera movements and a static subject (a room), 360 degree shutter can absolutely be used even for slow-mo delivery, and I often do use it to keep from having to crank ISO. If I were shooting sports, that would be different I can see a pretty strong use case for over cranking there. IMO the 180 degree rule is a good guideline for those just learning and a good general fallback in situations where literally anything would work, but it certainly isn't appropriate for every situation.
Gerald, it would be 'Crazy' if you could shoot one of these videos with 3 cameras, at 3 different frame rates, at the same time and then upload together! You've touched on this before but, since you cant' show 60fps on video you've uploaded at 24p then, I think, it would be incredibly helpful to a confusing topic, especially for beginners or cavemen like myself to actually see the difference. I think it might also help us decide on What to shoot for- a real estate video would probably benefit from a different fps than a vlog or something that might look better slowed down for creativity. Just a thought. Keep up the amazing work.
Thans for this and very helpful for a n00b. The 180 degree rule for 24p/30p timeline was understood and has been working well, but i was unsure on the 60/120 shots for use in slow motion situations and this has made things clearer!
Great video. One thing thats worth keeping in mind is that footage with people or actuality may read a bit differently to a spinning ruler. If you film sports or anything with a lot of movement at 120fps with 1/60th shutter and play it back in slow motion, the motion blur is going to be pretty distracting and probably look wrong to most people.
I always fight with my colleagues because of the extreme importance they place on shutter. For me, achieving accurate exposure is the most important thing, and when you don't have ND and you want to prioritize a certain aperture, sacrificing that "naturalness" of the movement a bit is the least important thing. Of course this example of the spinning rule is great, but my fights are when you're doing an interview with a guy sitting still and they start to bother you with the shutter and it's like ... Nobody will notice. Great video anyway, as always.
My thoughts exactly. For aperture, I try to find the best balance between enough depth of field and not too much diffraction. For ISO, I like shooting at one of the base ISOs for best results. That leaves the shutter speed to adjust for the amount of light. Personally, I barely notice any difference when people are fairly still.
I've got a camera that *does* shutter angle as an optional setting -- the LUMIX GH5 . I'm curious to know what changing the shutter angle vis-á-vis the frame rate generates in terms of... coherent comments from you panel of experts. There must be a lore about shutter angle going way back; I'd be curious for you to dredge some of it up and transpose it to now-a-days. Thanks for the info.
Finally. The most bothering thing in my mind about shutter angle has been answered. Thank you for answering this question in such scientific and objective manner. This is very obvious question that has never been answered properly since the invention of high frame rate video.
Man, You just made my day - I got undone! (And thanks for going through the trouble of building this wonderful contraption. Never would have thought of something like that.)
great video. well done... I am so glad that the panasonic GH cameras has the ability to show in the display the degree shutter. make life a little easier.
For ages i've being ignoring the 180º rule on purpose and made it a characteristic of my work (usually i record 30fps at 1/50 but even on 60fps i keep 1/50) and people always come to me saying "hey dude, your shutter is wrong, it must double the fps" and i'm all "yeah yeah, i know F*** it, i like more this way because blur), even teachers on my photography direction class, and they think i'm crazy and i'm sh*tting on the sacred rules of fotography and that Lumiere brothers are cursing me in the afterlife because of this. Thank you Gerald for making this test, it shows me that im not that crazy (or that we are) and i have some basis on my line of work. Now if someone come to me saying this again, i will send this video to them (or not, f**k them, i'll just keep doing my sh*t).
Very cool way to collaborate with others, don't see that very often. And it adds more weight to your videos, since it's not only your opinion. Great videos. I wish I knew about your channel earlier. Thank you Mr. Double Click
Fantastic video. Really useful! Question, though, why didn't you make your swinging arm longer and place the drill in the middle to prevent the accelerated downswing?
I actually like the 60p 1/60th. You can always decide to slow something down if you're shooting run and gun events. And it's fluid enough and not blurry enough to make it look appealing.
I found this video really fascinating, but am left yet unconvinced that 24fps is a reasonable choice at all. I saw zero noticeable difference in 24 vs 30 for blur, or in general, and the frame pacing difference of fitting a 24hz video into my 60hz display (which the vast majority of people are using) I still see separation of the spin even in 24 and 1/50. I hate this discussion because I feel like as a video nerd I should be seeing and valuing whatever difference there is and I've never once in my life been convinced 24 is "more cinematic" or smoother, meanwhile there's tons of judder/pacing issues upsampling it to 60hz displays.
You'll see separation in the spin whenever the shutter angle is less than 360 degrees. I think with 24p the convention of having a 180 degree shutter largely comes from a balance between a short shutter speed where things would look very staccato and a long shutter speed where slow moving subjects are difficult to track because of their blur.
24p is definitely inferior in most ways save for maybe cost/space efficiency, but I'm just so used to it. We say it's filmic, because it is. I suppose the question that should be asked is: Is filmic a good thing? I guess if you're trying to emulate a look then it makes sense, but I'd need a good year of only seeing 30p content everywhere to erase the 24p conditioning. 😜
@@geraldundone Would 30p at 1/50 be the best of both worlds? Less (or no) judder in a 60hz world and the same motion blur that we're used to? Thoughts?
Man, you should be a teacher!!! How on earth can someone explain something this boring in such an intense and interesting way. I love all of your videos, keep it up! You taught me a lot of things about videography that I didn't think I needed.
Thank you so much for the explanation. I've been struggling with the soap opera effect that i didn't even know how to say it or google about it. Now i understand it's because i used to shot at 60p, 1/125th and play it none slow motion on 30p project. i'm pretty sure i will have to come back to watch this video again cause i couldn't remember the rules
His test method seemed quite efficient and his observation about the expectation of the amount of motion blur seems to me to be the key. Fast movements cause the expectation of more blur, so the rule works well. Shooting at 120fps something that doesn't move fast doesn't make sense and for fast movements, respecting 180 is the most efficient way to balance the blur rate. However, the frame rate of the human eye is variable, it falls considerably in low light and we see more blur in low light. I think that footage that feels like night should have more blur compared to footage that gives the feeling of a well-lit environment. This seems to me to be a special point to be explored in the creative construction of the footage.
Nice warm up! Now we are all waiting for the ultimate test: The accelerating stagecoach. Different wheel diameters, different number of spokes, different shutter angles at 24 fps, 50 fps, 60 fps, 100 fps and 120 fps. I can't wait :)
Way to confuse the internet Gerald!! Seriously though, mindblown, as I have the blackmagic 4K set at Shutter Angle, not speed, and believed that since the angle is constant, the motion blur is constant for any fps under real time playback (also avoiding the impossible fractions)! Now I'm wondering, since the BMPCC4K fixes the angle... is the shutter speed changing automatically and compromising the footage for real time playback? .... I guess the answer is yes! Thanks for another great video!
Very informative, the only thing I would add to this video is discussing angle. I know shutter is the standard and the most popular but, to me at least, angle is so much easier to work with.
I've been using the 1/60 at 60p trick for years to make sped-up-in-post footage look natural. I can't believe I never thought to take the idea forward into slowed-down high framerate footage. D'oh!
I learned a lot in this. As someone who literally cannot watch 24p film projections because the flicker just drives me nuts I've wondered for a long time why we aren't doing movies at 120fps when the whole production to projection process is digital and we don't have miles of physical film to worry about (apart from the cost of vfx editing where every frame has a pricetag.) I much prefer 60p or higher frame rate for viewing literally anything but never understood the motion blur matching our eyes expectation of what happens when something is moving quickly. Question: at what frame rate do we no longer need motion blur? Thanks!
When shooting drummers, I find that using 1/80 shutter speed at 24fps gives you the best look. It's slightly choppy but the motion blur is still present.
The slowed-down 60p at 1/60th is really interesting - I've never really used a slower shutter when filming only used a slightly faster shutter while filming really fast-moving objects (skateboarding) but for the most part stick to the 180-degree shutter rule. It would be interesting to film the 60 @ 1/60th while adding some camera movement in addition to the drill spinning. I wonder if it would be too much blur? Or still look good? Either way, thanks for revitalizing my interest in shutter speed!
This is really helpful!! (as always) But I have a question tho.....Unless someone is willing to slow the footage down in post.....what would be the need to even shoot at 60p by keeping the shutter at around 1/60th? 😅 I mean rather than doing that....why not shoot at 24p itself if you wanna go for a real-time playback ? (Or am I missing smth here ?)
As usual, very informative video. Thanks. I strongly this kind of "nerdy" approach but this SS thing is also about creative choices. Typically, higher shutter angle may help to bring a sort of "intensity" to the footage when filming action.
Soap opera can be easily defined as anything that appears realistic to our eyes. Our eyes see approximately at 30fps, but it is variable. When we see 30fps video, our eyes detect it as closer to reality. 60fps is even closer to reality. 24fps simplly looks “cinematic” because it doesn’t look normal to our eyes. We have since adjusted our brains to understand that 24fps feels “not-normal” and we can easily step out of reality to view it. We aren’t confused in our brains that we are looking out a window at life but rather, we are viewing something out of reality. Motion blur is simply another version of reality vs not reality. Our vision has a similar motion blur to 180 degree rule. So we see that as normal. It just so happens that 24fps is abnormal and 180 degree shutter is normal. The combo is remembered as cinematic. In the end, use shutter speed to tell your story. Increase motion blur to take our brains out of normal and decrease to bring it closer to reality, but you can also take it back to abnormal with no/minimal motion blur. Gerald, you did a great job showing it with the spinning line. Perfect.
Yo at 8:05, you have 60p footage with a 1/50th s shutter speed. With a shutter angle greater than 360 degrees, wouldn't the camera actually be recording at a lower framerate? If the camera actually opted to actually record at 30p 1/50, then naturally that would look similar to the 24p 1/50 footage. Or is this mislabeled and the shutter should be 1/60 of a second?
It's possible on some cameras to do this. All that appears to happen is some frames just repeat. So it's a bit jerkier, but the motion blur is the same.
@@geraldundone I mean we can't tell when watching the video because it's a 24p project, but is that clip somehow shot on a camera where it isn't jerky at 60p 1/50? I assume you shot it on the a7s3 right?
@@thatcherfreeman Initially I was bother by this too as it's not physically possible.
But then I remembered that years ago when I used to have a d5300 DSLR I was able to shoot 24fps at super low shutter speed. The end result was just some extremely blurred images while having duplicated frames, like Gerald mentioned.
Yes, a7S III. Also, check the description and download the 60p sample. It includes 1/50th, 1/60th, and 1/125th on a proper 60p timeline.
it's like running a latest fps game on a low priced pc. And with hugh blur.
Great video Gerald, Congrats! In wedding we use 50p all the time with 1/50 shutter (in 25p timeline editing) because we don't know what moment should we put in a slow mo in editing, but we want to the normal speed record sections have a natural blur. We know the slow-mo sections have to much blur, but is a much better compromise than the normal speed sections have not enough motion blur. Moreover in that way the 50p record in 25p timeline with 1/50 shutter in normal speed (droping every second frame) looks excatly the same as a 25p with 1/50 shutter record, but the whole wedding is slow-mo capable if you need it. (We are in Europe and we use PAL format, this method won't work with NTSC 60p/24p combination)
Seems like a good strategy! Situations like that sometimes make me want to split the difference and shoot at 1/75th. 😜
wow this very good information! thank you for sharing!
@@geraldundone maybe, but i'm a big fan of the 1/50 shutter motion blur, I don't want to ride of it, but it worth a try in some test shoots, we will see how it looks :)
@@Jomboy.mpeg_4 You are welcome 😉
Why not just shoot at 1/100 the whole time?
It’s been a while since you’ve gone in depth on a more generic filming topic. Love these.
+1
Thanks for having me chime in Gerald! It was super interesting to try to erase the obvious bias that I have and actually choose which one looked the most NATURAL to me. And its also interesting to note that the one that looked the most NATURAL isn't the one I would prefer to shoot at because of the "soap opera" effect. I always felt like the soap opera thing made me feel like I was standing beside the camera op. This obviously makes it feel more real but it's also the reason I don't like it as much.
I have always shot everything at 60 fps but with the 180degree rule because I detest motion blur when panning and moving around, it is very distracting. This way my videos having twice the information and frames are crisp and sharp even when there is a lot of movement in the scene. I can also slo-mo or speed ramp things. I will now try at the 1/60 shutter to see if that stays sharp while reducing the so-called soap-opera effect. 24p is old school and technology has changed enormously over the years. Cinematic my ass....
@@Pfagnan different use cases. News, sports, live TV spots, vacation footage, are all meant to look like real life, and the realistic look of 60p (or even 30i, but not so much 30p) is desirable for those situations, but if you want your production to look like a movie, those frame rates tend to spoil the "movie" look. You can avoid excessive motion blur and stuttering at those lower frame rates by using wider focal lengths and moving your camera more slowly.
Ya I have changed things and use mainly 30p now. RUclips loves this 4k frame rate
This is ridiculously useful
Yup
Such a helpful video. I’ve always used the 180-degree rule but never thought to experiment with lower shutter speeds with higher frame rates played back at those higher frame rates. This should be a must-watch for anyone uploading a video to RUclips.
THANK YOU !, I've tried to explain this to soooo...many people in the past I've given up, no one understands but it's all based on math and time which never changes no matter what the frame rate.. amazing video man !!!!
I'm glad you get it, it's exhausting repeating myself & nobody understands or cares
so many other videos talk about the shutter speed like it's the most important decision you will ever make in your life... This video really helped put it into a more reasonable perspective for the average video creator. I'm glad to know that 60 @ 1/60 works well for real time, because at 1/120 my camera gets too dark. I should have just trusted my eyes and realized at 1/60 it looks good, but all these people treating the 180 degree rule like it's a commandment got in my head and misguided me lol.
When you think about it, it should be obvious. As he said in the video, the only thing that determines motion blur is the shutter speed. So knowing that, if your goal is to get the tradtional "cinematic" (whatever that means) motion blur of 1/48(50), then you simply keep your shutter speed the same 1/48(50) regardless of what framerate you shoot in.
A key detail is if you're trying to stabilise footage, you need a faster exposure so all frames are sharper. Otherwise you end up with a weird 'blur' effect on the object that has been stabilised. It looks a bit like it is vibrating from bass as you get motion blur on something that isn't moving any more.
GERALD! you've done it man!!! I can 100% believe it. As an old school sub that believed in you from the days of ideas from a hat. Pre 1000 subs. I want to sincerely congratulate you on finding your niche and keeping with it. Well done. ❤️
If your footage is a blurry mess, then don't just try and take a guess.
Hop on over to crazy Undone, where spinning rulers are loads of fun.
Find your shutter speed and your rate, don't leave your filming up to fate.
Its where Gerald has done all the work, so in the comments don't be a jerk.
Thank you Gerald for putting in the time, steeling your knowledge feels like a crime.
The more you do the more we watch, because your videos are always tippy-top notch!
I’ve been doing my own tests in this rule for the last 2 weeks and Gerald just drops a video on it out of nowhere. Am I baby Gerald?
Thanks Gerald, you're the only guy on RUclips to explain this properly. I couldn't find anyone else to answer what makes the major difference to motion blur - is it frame rate or shutter speed? - and you answered it as the first question.
Whoa! this explains the age old question more visually clearly than any other. Thank you on behalf of the universe Gerald U.
Thanks, Gerald! Those of us with a stills background, and therefore no superstitious attachment to the 180° rule, suspected this all along.
Understanding shutter speed from the perspective of video *and* stills - and using evidence, rather than just tradition - is definitely worthwhile to better inform creative decisions.
I thank you so deeply for this video. You have no idea the level of vindication/validation this brings. I've felt like I've been screaming into the void for so long about this, it's insane. Another thing to note is that for footage that's going to be speed ramped like 60 in a 24, it's more important to conserve the "real-time" motion blur by using the lower shutter speed than it is to get the slow-mo blur correct.
4:35, I agree it IS small, but that difference between 1/50 and 1/60 is what can make or break 30p when comparing it to 24p's so-called "cinematic" qualities. IMO 30p 1/50th is the goat, and the icing on the cake is that it'll shoot in any country without the lights flickering. If I really need to shoot a low frame rate, I'll drop down to 25p and probably a 1/40th shutter, but that's my limit. 50p 1/60th is the single most versatile IMO, and also the best-looking HFR combo to be played in an HFR timeline.
I wish 40fps was a thing that existed and had platform/editing-level support for real-time playback, though. 40 is a direct middle ground between 30 and 60, mathematically (24 to 30 is an 8.33ms reduction between frames, and 30 to 40, as well as 40 to 60 is the same reduction again, each time.) and it should theoretically look almost indistinguishable from real life while saving even further on space than 50 compared to 60.
40fps 1/50th would also be another "universal anti-flicker" rate, too, and would have the best balance between lifelike motion smoothness and natural motion blur in my opinion. However it does lean on the realism side quite heavily compared to 24p's fully artistic look and 30p's balanced look, with 60p looking "hyper-real" sometimes as if it's trying too hard, and that's _including_ having the correct 1/60th "open" shutter speed for natural HFR motion blur.
Another thing I want to know is why iPhonedo's video portion looks so choppy compared to yours. I assume he's shooting 24p and 1/50th like most filmmaker channels do, and I've been narrowing down the "why?" to this desynchronied/laggy 24p look vs how some people make it look smooth over the last few months.
It's either the resolution(1080 vs 4k), all intra-frame vs "ipb", 23.976 getting turned into true 24 (or a mismatch between filming/editing/exporting without interpretation), or it's just the codec used to film. With a weighting of 35%, 35%, 20%, and 10% respectively on which one I think is doing it.
So what do you think it is, and what insight can you give me on his settings vs yours?
Great video, Gerald!
I think it would have been interesting to make it a blind test for the other youtubers.
P.S. DPreview was the most insightful of the bunch, in my opinion
Neat tests! Anyone with a camera should try shooting in all different frame rates and shutter speeds - learn a lot IMHO.
Nicely demonstrated Gerald!
I think Jordan Drake’s comment on using 60p at 1/60th was the key takeaway here. With shutter speed determining blur and frame rate determining how we actually perceive that blur, the choice then comes down to the filmmaker. There’s no right or wrong answer, there’s simply “What are you trying to achieve?”.
It’s maybe a little bit like a photographer asking what’s the right shutter speed and aperture combination? You can tell them the Sunny 16 Rule, or F8 and Be There... but they’re just guidelines for adequate exposure or focus. If you want to master your craft, then understand the effects of each variable, and make a considered choice. Also, be willing to have fun, take risks and experiment!
This was helpful. Thanks man
hahaha your every where . so glad to see that even great photographers still like to learn
Jonathan Alcantar lol right
Its criminal how much recognition you don't receive. You articulate so well and with such detail that could tell me the grass is orange and I'd believe it true. Also;
Next into - I'm Gerald Undone and I'm done ungeralding.
This was great! I can't imagine how many times you jacked up the impossible numbers dialog! Also- I only had to pause this 3 times to get it! That's a huge win for you. As always- thanks for the quality and relevant work...
FANTASTIC!! I’ve been wondering about this ever since learning the rule. Tried experiments etc. This was a great discussion and great way to test it! Thanks for doing this Gerald!
super super helpful, I always render at 60fps and used a shutter of 1/100 because 1/120 caused a visible flicker due to my lights. I always thought I had to use 180°, now I know better. I mean, I actually want the soap opera for my own videos but now I'm definitely also gonna try 1/60 next time shooting a video. Thanks so much, always learning something actually very useful here on this channel, big thumbs up
Having tried 60fps 1/60s a few times, it’s so immersive that it’s almost unnerving (in a refreshing way). I don’t know if many movies would want to use that, but for more “documentary” types of videos, it should work very well. (I am using the word very loosely - I include videos of myself playing the piano or the guitar under that term.)
If you are not in USA, Canada or Japan(i think) you should be using 25, 50 and 100FPS. So need to change your format to PAL, this will stop the flickering
I think use 50fps 1/100 more convenient for u
@@TangerineTux For sure, I experimented with filming my piano playing at 60 fps with 1/60s shutter, and honestly, it's the first time that I looked at the playback and it actually looked real. 180 degree shutter, especially at 60 fps, doesn't look real. Cinematic doesn't mean real; it means cinematic.
@@_Joshhoffman Half of Japan runs on 60 Hz and half of Japan runs on 50 Hz. It's mad.
This video is so personally satisfying. Many years ago I got tired of listening to all these rules when filming. So, I did my own tests and fell in love with with 48fps at 60 shutter. No client has ever noticed/complained. Looks good to me, and that's all that matters.
Gerald you are possibly the only vlogger that makes videos that consider slowing down. Amazing content as usual. Oh and 11:25 LOLOL!
And just like that... you gave me a new way to think about shooting in 60p knowing some of it will be played back on a 24fps timeline, at normal/real-time speed (dropping frames). I always follow the 180 rule, and then hate the real-time segments for being too choppy. I’m going to experiment to see if I’m OK with the extra motion blur on the slo-mo in exchange for smoother-looking real-time. (The joys of having just one camera... and only one take... choosing a shooting frame rate, and having to live with it for both slo-mo and real-time during playback)
🌀🌀🌀🌀 I… Am… Hypnotized… 🌀🌀🌀🌀
iPhonedo you are an actual comedian in this video XD
I’m hypnotised by your desktop image
👁👃🏻👁
Bi an seni görünce şok oldum :D
Such an awesome channel. Thanks for sharing your useful knowledge. 🙌🏻
Lately in post production, I constantly come across the use of slow motion (at 60fps or 120fps ) that is time remapped to go fast then slow then fast (think Guy Ritchie style). I often times have to add fake motion blur to reduce the choppyness on the sped up remaps.
Great video G.
Great video. There is so much nonsense talked about this topic, with many pundits failing to account for the project settings, and blaming judder on the frame rate, when all the time it is a mismatch between shooting frame rate and project frame rate. You deal wi9th this correctly, and supply very convincing evidence.
Gerald, it absolutely floors me that a high quality resource such as yourself has not absolutely blown up into the millions. It’s only a matter of time. Enjoy and Thank you!!!
I love your methodical approach and your fantastic intros.
OMG this video is great 😊, I appreciate the break down I’ve been curious about all these same things
2:25 dude.. the youtuber taking the color measurement tool and using it as a make-up kit is just immense... great video as always by the way.
I wonder if setting up the drill so it was pointing towards the ceiling and shooting above/below would had been smoother, no ramping speed for the nitpickers. Though, I don't think the way it was done was a problem, and having slight different speeds helped get different blur conditions.
Great video! Super funny at the end! Keep it up 👍🏻
Thanks a bunch you crazy number person G. The 180 deg shutter rule gives us a good guideline to maintain what we are conditioned to perceive as "natural" and "cinematic" look. At the end of the day film makers can do whatever they want. I follow a loose version of the rule where a lower shutter angle is for dramatic action sequence and higher shutter angle for more dreamy smooth effect. It is also worth noting that your edit fps determines the final "smoothness" of the film so you need to ajdust your shutter speed with consideration of your editing fps, if it is going to be different. For example, I shoot 50fps 1/100 in a live show setting where I do not want to be changing camera settings due to the lack of control of the situation and unpredictability of the moments, then edit in a 25fps timeline for faster workflow, will yield a final shutter angle of 90 degrees. That angle is half of 180 which makes the scene more action packed and jarring. Addtionally, I reserve the "right" amount of motion blur expected from a fast moving object if I choose to slow down by 50%. Even If I don't use a slowmo at all, shooting at 25fps 1/100 is not that beneficial to me because my camera somehow produces the same file size regardless of what fps I shoot.
I have come back to this video several times. Such a fantastic treatment of the subject
He completely ignored the point about 24 fps footage on 60Hz displays though because it kind of makes any material recorded as 24 fps look like crap no matter the shutter speed. Unless you have a display capable of true 24/48 fps.
Excellent job Gerald. The only major thing unaccounted for in this overview is the speed of the object. Using a 360 shutter angle while shooting 60 fps or 120 fps can be very advantageous (as you can increase your exposure for low light, prevent gitter in extremely slow moving objects etc). I would advise the following caveat; if you need more light and your filming slower moving objects at high frame rates, you can most certainly slow down the shutter speed and get excellent results.
I am glad to see someone has finally put this to the test.
Good old Gerald Undone.. Best RUclips explainer for camera related things! Thanks again for the amazing content!
Fantastic video Gerald like all your videos but this one in particular is a really simplified visual representation of a rather complex filming technicality and you have articulated it in an easy to understand demonstration With definitive answers
I have been using the 180 rule on all my vids, but am now going to make adjustments for higher frame rates and slowed down vids. Thanks for those two suggestions. Sure wish I had half of your knowledge...I might actually know what I am doing. Great stuff Gerald!!
I like your presentation method. Arguments (opening statements), questions in order to answer those arguments and closing remarks.
I don't even understand what you're trying to explain here anyway, but definitely it works. I mean, there must be a physic rules to explain this, but I'm just too dumb for this.
Good work anyway
Great info and very well done. Love it. Thanks this pretty much aligns with what I have been doing. Outstanding as always.
nice demonstration but I like the look of 24p@ 1/125. looks very unique
You're always coming through with the super detailed videos. Very special channel
A key thing not really discussed is the camera and subject's relative motion to each other. So for instance, I shoot interiors videos. With slow camera movements and a static subject (a room), 360 degree shutter can absolutely be used even for slow-mo delivery, and I often do use it to keep from having to crank ISO. If I were shooting sports, that would be different I can see a pretty strong use case for over cranking there. IMO the 180 degree rule is a good guideline for those just learning and a good general fallback in situations where literally anything would work, but it certainly isn't appropriate for every situation.
Gerald, it would be 'Crazy' if you could shoot one of these videos with 3 cameras, at 3 different frame rates, at the same time and then upload together! You've touched on this before but, since you cant' show 60fps on video you've uploaded at 24p then, I think, it would be incredibly helpful to a confusing topic, especially for beginners or cavemen like myself to actually see the difference. I think it might also help us decide on What to shoot for- a real estate video would probably benefit from a different fps than a vlog or something that might look better slowed down for creativity. Just a thought. Keep up the amazing work.
This is like the best shutter speed video ever. THANK YOU and THANKS TO ALL YOUR FRIENDS
Thans for this and very helpful for a n00b. The 180 degree rule for 24p/30p timeline was understood and has been working well, but i was unsure on the 60/120 shots for use in slow motion situations and this has made things clearer!
Ok...probably one of the best explanations of this with a great visual aid that I’ve seen, this made so much sense. Thanks! :)
Wow, super in-depth and answered every single question I could possibly have on the matter. Thanks!
Great video. One thing thats worth keeping in mind is that footage with people or actuality may read a bit differently to a spinning ruler. If you film sports or anything with a lot of movement at 120fps with 1/60th shutter and play it back in slow motion, the motion blur is going to be pretty distracting and probably look wrong to most people.
Hello dude,shoot at 60fps 1/100，does the motion blur looks natural？
Just recommended subscribing to your channel to my students. Thanks for great well-put explanation!
Man I love this stuff. Knowing the science behind the creative can really unlock so many new ideas. Appreciate you Gerald!
Excellent information and demonstration, love it. On top of that, I really like the tone and pace of this video, good job!
Straight to the point as always. Love your videos 👌🔥
I always fight with my colleagues because of the extreme importance they place on shutter. For me, achieving accurate exposure is the most important thing, and when you don't have ND and you want to prioritize a certain aperture, sacrificing that "naturalness" of the movement a bit is the least important thing. Of course this example of the spinning rule is great, but my fights are when you're doing an interview with a guy sitting still and they start to bother you with the shutter and it's like ... Nobody will notice. Great video anyway, as always.
My thoughts exactly. For aperture, I try to find the best balance between enough depth of field and not too much diffraction. For ISO, I like shooting at one of the base ISOs for best results. That leaves the shutter speed to adjust for the amount of light. Personally, I barely notice any difference when people are fairly still.
Only just found your channel, ABSOLUTLEY LOVE THE INTRO!
I've got a camera that *does* shutter angle as an optional setting -- the LUMIX GH5 . I'm curious to know what changing the shutter angle vis-á-vis the frame rate generates in terms of... coherent comments from you panel of experts. There must be a lore about shutter angle going way back; I'd be curious for you to dredge some of it up and transpose it to now-a-days. Thanks for the info.
Finally. The most bothering thing in my mind about shutter angle has been answered. Thank you for answering this question in such scientific and objective manner. This is very obvious question that has never been answered properly since the invention of high frame rate video.
Man, You just made my day - I got undone! (And thanks for going through the trouble of building this wonderful contraption. Never would have thought of something like that.)
You are a legend man.
Honestly, you deserve way more subscribers and views
great video. well done... I am so glad that the panasonic GH cameras has the ability to show in the display the degree shutter. make life a little easier.
For ages i've being ignoring the 180º rule on purpose and made it a characteristic of my work (usually i record 30fps at 1/50 but even on 60fps i keep 1/50) and people always come to me saying "hey dude, your shutter is wrong, it must double the fps" and i'm all "yeah yeah, i know F*** it, i like more this way because blur), even teachers on my photography direction class, and they think i'm crazy and i'm sh*tting on the sacred rules of fotography and that Lumiere brothers are cursing me in the afterlife because of this. Thank you Gerald for making this test, it shows me that im not that crazy (or that we are) and i have some basis on my line of work. Now if someone come to me saying this again, i will send this video to them (or not, f**k them, i'll just keep doing my sh*t).
A few months back I was thinking of the same problems, it just game me a headache, thank you for testing this and making it very clear.
I've always enjoyed iphonedo but now it's love.
Very cool way to collaborate with others, don't see that very often. And it adds more weight to your videos, since it's not only your opinion.
Great videos. I wish I knew about your channel earlier.
Thank you Mr. Double Click
This video was so much helpful to determine which shutter speed to use. Thank you very much!
Fantastic video. Really useful! Question, though, why didn't you make your swinging arm longer and place the drill in the middle to prevent the accelerated downswing?
Good to know I'm not the only one who had doubts about this rule! Great video Gerald.
Your format is top notch, as always.
Gonna need to watch it a few times just to understand everything properly. Good information as always.
Thanks for putting that together! A fantastic basic test! Time to do a little experimentation 👍
I've always wondered about this! Thank you! I love your videos!
I nearly spat out a mouth full of weetbix laughing when I saw iPhonedo’s desktop image.
I actually like the 60p 1/60th. You can always decide to slow something down if you're shooting run and gun events. And it's fluid enough and not blurry enough to make it look appealing.
So that would be usefull unless you want that soap opera effect
@@1RJ2 Hello dude,shoot at 60fps 1/100，does the motion blur looks natural？
Hello dude,shoot at 60fps 1/100，does the motion blur looks natural？
@@动漫区漫哥 If you shoot 60fps at 1/100 it would like fine but if you try to slow it down it may look a little blurry, you should use 1/125.
I found this video really fascinating, but am left yet unconvinced that 24fps is a reasonable choice at all. I saw zero noticeable difference in 24 vs 30 for blur, or in general, and the frame pacing difference of fitting a 24hz video into my 60hz display (which the vast majority of people are using) I still see separation of the spin even in 24 and 1/50.
I hate this discussion because I feel like as a video nerd I should be seeing and valuing whatever difference there is and I've never once in my life been convinced 24 is "more cinematic" or smoother, meanwhile there's tons of judder/pacing issues upsampling it to 60hz displays.
I have to agree. never have liked 24p for exactly the same reasons. on a 60hz screen 60p at close to 60fps looks most natural to my eyes.
You'll see separation in the spin whenever the shutter angle is less than 360 degrees. I think with 24p the convention of having a 180 degree shutter largely comes from a balance between a short shutter speed where things would look very staccato and a long shutter speed where slow moving subjects are difficult to track because of their blur.
24p is definitely inferior in most ways save for maybe cost/space efficiency, but I'm just so used to it. We say it's filmic, because it is. I suppose the question that should be asked is: Is filmic a good thing? I guess if you're trying to emulate a look then it makes sense, but I'd need a good year of only seeing 30p content everywhere to erase the 24p conditioning. 😜
@@geraldundone everything we know and accept is due to conditioning
@@geraldundone Would 30p at 1/50 be the best of both worlds? Less (or no) judder in a 60hz world and the same motion blur that we're used to? Thoughts?
Man, you should be a teacher!!! How on earth can someone explain something this boring in such an intense and interesting way. I love all of your videos, keep it up! You taught me a lot of things about videography that I didn't think I needed.
Really liking these new gizmos you’re including in your videos now. Great deep dive into the weeds of shutter angle!
Thank you so much for the explanation. I've been struggling with the soap opera effect that i didn't even know how to say it or google about it. Now i understand it's because i used to shot at 60p, 1/125th and play it none slow motion on 30p project.
i'm pretty sure i will have to come back to watch this video again cause i couldn't remember the rules
His test method seemed quite efficient and his observation about the expectation of the amount of motion blur seems to me to be the key. Fast movements cause the expectation of more blur, so the rule works well. Shooting at 120fps something that doesn't move fast doesn't make sense and for fast movements, respecting 180 is the most efficient way to balance the blur rate. However, the frame rate of the human eye is variable, it falls considerably in low light and we see more blur in low light. I think that footage that feels like night should have more blur compared to footage that gives the feeling of a well-lit environment. This seems to me to be a special point to be explored in the creative construction of the footage.
That's a very interesting idea. Cheers!
Faruk always cracks me up! Great video; super helpful!
Nice warm up! Now we are all waiting for the ultimate test: The accelerating stagecoach. Different wheel diameters, different number of spokes, different shutter angles at 24 fps, 50 fps, 60 fps, 100 fps and 120 fps. I can't wait :)
Way to confuse the internet Gerald!! Seriously though, mindblown, as I have the blackmagic 4K set at Shutter Angle, not speed, and believed that since the angle is constant, the motion blur is constant for any fps under real time playback (also avoiding the impossible fractions)! Now I'm wondering, since the BMPCC4K fixes the angle... is the shutter speed changing automatically and compromising the footage for real time playback? .... I guess the answer is yes! Thanks for another great video!
or do what you want ! love you Gerald
Very informative, the only thing I would add to this video is discussing angle. I know shutter is the standard and the most popular but, to me at least, angle is so much easier to work with.
I've been using the 1/60 at 60p trick for years to make sped-up-in-post footage look natural.
I can't believe I never thought to take the idea forward into slowed-down high framerate footage.
D'oh!
Hello dude,shoot at 60fps 1/100，does the motion blur looks natural？
I learned a lot in this. As someone who literally cannot watch 24p film projections because the flicker just drives me nuts I've wondered for a long time why we aren't doing movies at 120fps when the whole production to projection process is digital and we don't have miles of physical film to worry about (apart from the cost of vfx editing where every frame has a pricetag.) I much prefer 60p or higher frame rate for viewing literally anything but never understood the motion blur matching our eyes expectation of what happens when something is moving quickly. Question: at what frame rate do we no longer need motion blur? Thanks!
Super confused about why you don't have a million subscribers!? But I'm here for every upload 👍
THE KING OF RUclipsRS - not even close- THANK YOU GERALD!!!!
When shooting drummers, I find that using 1/80 shutter speed at 24fps gives you the best look. It's slightly choppy but the motion blur is still present.
The slowed-down 60p at 1/60th is really interesting - I've never really used a slower shutter when filming only used a slightly faster shutter while filming really fast-moving objects (skateboarding) but for the most part stick to the 180-degree shutter rule. It would be interesting to film the 60 @ 1/60th while adding some camera movement in addition to the drill spinning. I wonder if it would be too much blur? Or still look good? Either way, thanks for revitalizing my interest in shutter speed!
This is really helpful!! (as always) But I have a question tho.....Unless someone is willing to slow the footage down in post.....what would be the need to even shoot at 60p by keeping the shutter at around 1/60th? 😅 I mean rather than doing that....why not shoot at 24p itself if you wanna go for a real-time playback ? (Or am I missing smth here ?)
Great video Gerald, Thank you!
As usual, very informative video. Thanks. I strongly this kind of "nerdy" approach but this SS thing is also about creative choices. Typically, higher shutter angle may help to bring a sort of "intensity" to the footage when filming action.
Soap opera can be easily defined as anything that appears realistic to our eyes. Our eyes see approximately at 30fps, but it is variable. When we see 30fps video, our eyes detect it as closer to reality. 60fps is even closer to reality. 24fps simplly looks “cinematic” because it doesn’t look normal to our eyes. We have since adjusted our brains to understand that 24fps feels “not-normal” and we can easily step out of reality to view it. We aren’t confused in our brains that we are looking out a window at life but rather, we are viewing something out of reality. Motion blur is simply another version of reality vs not reality. Our vision has a similar motion blur to 180 degree rule. So we see that as normal. It just so happens that 24fps is abnormal and 180 degree shutter is normal. The combo is remembered as cinematic. In the end, use shutter speed to tell your story. Increase motion blur to take our brains out of normal and decrease to bring it closer to reality, but you can also take it back to abnormal with no/minimal motion blur. Gerald, you did a great job showing it with the spinning line. Perfect.
This was incredibly helpful and timely...almost scary timely...was just pondering this yesterday!!