Calibrating lenses w/ DJI Focus Pro - it's QUIRKY!!!

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  • Опубликовано: 31 янв 2025

Комментарии • 61

  • @philipvivarelli
    @philipvivarelli Месяц назад +1

    1:21 you say „it steps like crazy“. I‘m having this same issue while calibrating. It‘s really annoying if you have to calibrate a lot of lenses. I never saw another youtuber complaing about this. So thank you 😅
    Firmware updates didn‘t fix it… Is there somebody else having this issue or just us?

    • @kevinmpham
      @kevinmpham  Месяц назад

      You're welcome! Mine actually stopped doing the stepping thing but has a bunch of new problems. I'm not sure what I did to stop it, but did you update your motors' firmware? I'm running it alongside RS4 Pro and DJI Transmission, maybe one of those factored into solving the issue..

    • @philipvivarelli
      @philipvivarelli Месяц назад

      @ actually I just tested it again and yes it works for the frist time 🙈, but yeah I‘m also having issues with switch between the Grip (handheld) and RS 4 Pro (Gimbal). It detects „inconsistent firmware“ even though I‘m on the newest firmware on everything. Once it even deleted all of my lens profiles. And it‘s also a bit a bummer that you can only use 3 profiles on the gimbal. I started using the handgrip as a second grip on the gimbal with longer usb-c cables. What are your new problems?

    • @kevinmpham
      @kevinmpham  Месяц назад

      @@philipvivarelli Ugh I hate that deletion of lens profiles too! It's so frustrating when you prep the day before and on the shoot day everything's gone. Just that alone is a big red flag. We should be able to trust our gear!

    • @philipvivarelli
      @philipvivarelli Месяц назад

      @@kevinmpham yeah, this happened to me the last week on the gimbal… I was lucky having an autofocus lens with me but my camera (Lumix S1H) isn‘t known for having good autofocus, so the results were pretty bad.

  • @davechin5639
    @davechin5639 7 месяцев назад +3

    you don't have to be exact on 1m and 4m like the previous version. it will now automatically calibrate in the ranges it specifies (it does it exactly based on the lidar distance. That is very helpful since when it says to focus and it jumps, so you can move the camera if you can't get tack sharp using the + and - on the screen. Also, it means you can focus your lens that has a minimum focus of 1.5m

    • @kevinmpham
      @kevinmpham  7 месяцев назад

      Thanks Dave, I'm gonna try this and if it works post an update!

    • @joaquinperalba1624
      @joaquinperalba1624 7 месяцев назад

      Any update on this? Thanks.

    • @kevinmpham
      @kevinmpham  7 месяцев назад

      @@joaquinperalba1624 So yeah, I managed to trick it into accepting the 135, by means of sliding the camera back and forth on the tripod plate to get underneath 1.45m. It's not perfectly sharp at minimum focus but it's close enough, and seems to focus on distant things alright.

  • @markhoon7931
    @markhoon7931 4 месяца назад +4

    For those who can't calibrate with dslr lenses....you cant, don't waste your time you need to do manual hard stops with the ring of your lens for the focus calibration to work. The system works best with cine lenses or lenses with a focus hard stop. Dont waste your time trying. \m/\m/

  • @patricioderito3722
    @patricioderito3722 13 дней назад

    Hi, question, if anyone knows. I'm trying to calibrate a 50mm Full Frame prime lens on a Blackmagic Camera (Super 35 Sensor). Do I set the millimeters to 50 on the lidar since it's a 50mm lens or should I set it to what a 50mm would be on a crop sensor (I think it turns out to be a 75mm). Does that make sense? let me know. Thanks

    • @kevinmpham
      @kevinmpham  12 дней назад +1

      I believe the length you set it to is only a tag and does not bear any influence on performance.

  • @fabiobus7671
    @fabiobus7671 4 месяца назад

    Thanks, man. So how to calibrate 135mm if the range limit is 100? Could you explain here again because I don't want to make mistakes.

    • @kevinmpham
      @kevinmpham  4 месяца назад +1

      You're welcome, just calibrate it as normal. The 100 will just be the "name" of the lens profile.

    • @fabiobus7671
      @fabiobus7671 4 месяца назад +1

      @@kevinmpham, thank you very much. ☺️

  • @LascuatroesquinasSHORTS
    @LascuatroesquinasSHORTS 7 месяцев назад +2

    Been waiting for my lidar combo for almost 3 month now😢

  • @studiohyden
    @studiohyden 8 месяцев назад

    Hyped on the Pham Channel!

  • @tecno8335
    @tecno8335 5 месяцев назад +1

    I got it but cant get my focus motor to calibrate with my sigma 18-35 😢 i think this is easier wirh a cine lens

    • @digiwizard86
      @digiwizard86 5 месяцев назад

      Depending on the camera it might not be possible as that's a lens designed for photography so it doesn't have hard stops or a linear focus throw

    • @GaborGeorge
      @GaborGeorge 4 месяца назад

      You have to add your own hard stop on the focus ring. That's how I solved it with sigma art zooms.

    • @tecno8335
      @tecno8335 4 месяца назад +2

      How do you add your own hard stops?

  • @JustWhatINeed83
    @JustWhatINeed83 4 месяца назад

    Hi Kevin thx for doing this…what did you mean pixel pixel mode. I use the outline focus tool on my Komodo so just wondering you meant. Maybe it’s the monitor focusing tool you are referring to. Thx!!

    • @kevinmpham
      @kevinmpham  4 месяца назад

      You got it! Pixel to Pixel means displaying the pixels on your monitor as they are, without downscaling, which is a fancy way of saying magnifying in on the image to check critical focus. Thanks for tuning in!

  • @valentindaude
    @valentindaude 5 месяцев назад

    Hi tanks for your video, I have same lens combo and I have troubleshoot also with focus pro. Does the autocalibration let you reach the infinity mark ? Because on 4 on my lens me not. I add lens to the calibration process, it start auto calibration and find good endpoint but after that in af or mf impossible to reach the true infinity mark. no problem in manual endpoint but for the lidar function library you can only make autocalibration focus.

    • @kevinmpham
      @kevinmpham  5 месяцев назад

      Interesting, I’ve also had the reverse problem where it won’t let me reach minimum focus. It’s kinda annoying!

    • @valentindaude
      @valentindaude 5 месяцев назад

      Oh yes ? less annoying but still strange for sure. on all your lenses ?

    • @kevinmpham
      @kevinmpham  5 месяцев назад

      @@valentindaude I believe it was on the lens that had a minimum focus of closer to 1.5 meters

  • @_johanvandermerwe_
    @_johanvandermerwe_ 2 месяца назад

    Would you recommend it after a few months of use? :) how does it focus on objects/ general focus except for faces?

    • @kevinmpham
      @kevinmpham  2 месяца назад

      Hey Johan :P when it works, it works alright, sometimes it doesn't want to minimum focus which is frustrating. Half of the time I use it, I want to throw it in the trash. Calibration is also not a one-and-done thing, but something you should do before every shoot since they corrupt over time.

  • @PabloDeBiasi
    @PabloDeBiasi 8 месяцев назад

    thanks, have you tried a closer distance, even if it's out of focus, just to determine what is the minimum operating distance to proceed with the second point? I'd really like to know since one of my lenses is very close to 1,5m

    • @kevinmpham
      @kevinmpham  8 месяцев назад +2

      Hey Pablo, thanks for writing in. I tried going in at 1.4m and even though the image was out of focus it would not let me proceed onto the 4m step of calibration. To me, this is a huge red flag. A lot of old tele lenses are around the 1.5m CF mark, and probably some old anamorphics too.

    • @PabloDeBiasi
      @PabloDeBiasi 8 месяцев назад

      @@kevinmpham thanks for your reply, my Canon nFD has a mfd of 1.2 so I really hope I could use it. hope they fix it or improve it in a future firmware update

    • @kevinmpham
      @kevinmpham  8 месяцев назад +1

      @@PabloDeBiasi I think 1.2 should be alright actually! Unless it's 100mm or longer...

    • @AKGreen
      @AKGreen 7 месяцев назад

      What happens if you want to focus at Infinity?

    • @kevinmpham
      @kevinmpham  7 месяцев назад

      @@AKGreen Use the AMF mode and manually rack to infinity

  • @dmgfilmproductionandphotog1567
    @dmgfilmproductionandphotog1567 6 месяцев назад

    can you change lenses as fast as without lidar? if not its better to get a mirrorless camera with pdaf+AF lenses.

    • @kevinmpham
      @kevinmpham  6 месяцев назад

      Obviously with AF lenses it’s going to be the fastest swap, but if you’re rocking a wireless follow focus system, it’s going to be about the same time for swap: disengage motor, swap lens, motor calibration. Only added step is to choose the lens profile you have saved on the unit.

    • @dmgfilmproductionandphotog1567
      @dmgfilmproductionandphotog1567 6 месяцев назад

      @@kevinmpham hope you can make a comparison in those 2 setups. no one shows how its done in actual whole video how they change lenses in a scenarios like going from a wide shot to a medium or closeup shots with a model/subject in front of them

  • @snapfootage
    @snapfootage 2 месяца назад

    I just bought one and I noticed the camera mic catches the noise of the lens spinning…Does anyone having the same problem?

    • @kevinmpham
      @kevinmpham  2 месяца назад

      What's your setup?

    • @snapfootage
      @snapfootage 2 месяца назад

      @ lumixS52 and 7artisan cine lens

  • @manuelbustamante2664
    @manuelbustamante2664 8 месяцев назад

    Hi Kevin, thanks for the very informative video. I own a set of vintage Zeiss ZE Classic lenses (next gen from the Contax Zeiss line-up). I was planning on selling them because the focus throw on the barrel is quite small, around 90 degrees on some of the lenses and because the 4 meter mark on this lenses is like just a couple millimetres away from the infinity mark, which means that from 4 meters to infinity there's almost no barrel travel, making them un-precise. Have you experienced this to be a problem so far? Do lenses need to have a longer focus throw to be more precise when using the Lidar? Thanks!

    • @kevinmpham
      @kevinmpham  8 месяцев назад

      Hi Manuel, thanks for watching. A few of my Contaxes have infinity really close to 2m and it seems to perform fine! I’m really bummed out that I can’t calibrate my lenses longer than 100mm though. Also I’m finding there’s a lot of things I don’t like, but I think the technology is really great.

  • @DanielSag-r7y
    @DanielSag-r7y 5 месяцев назад

    Hope you see this comment ,
    DJI transmission question
    Do you have only one attenna intentionally like to save battery if that’s a thing ? Curious since I was thinking of doing that

    • @kevinmpham
      @kevinmpham  5 месяцев назад +1

      Hi there! I haven’t noticed anything battery wise, but in short distances it seems to work just fine. Often when I’m on gimbal I only have two antennae on the TX.

    • @DanielSag-r7y
      @DanielSag-r7y 5 месяцев назад

      @@kevinmpham ah yes the gimbal imbalance , same here, thank you for reply! i was worried it wouldn't work but glad it does with only two! Also maybe now i won't bump my hand onto the side antennas lol

    • @kevinmpham
      @kevinmpham  5 месяцев назад

      @@DanielSag-r7y Check out ignite digi's low profile antennae!

  • @AnthonyMoreschi
    @AnthonyMoreschi 8 месяцев назад

    Thank you for the walk through. I just picked up the RS4 Pro and hopefully will get the lidar for it soon. I was wondering if you know how easy it is to go between using the RS4 with lidar to the Focus Pro off the gimbal? I’m assuming the lens motor would hold the data & you just need to switch the handle? Any experience with this? At the moment I’m using the PD movie lidar and it’s great but it doesn’t have as much range as I would like. Also the face tracking alone seems worth the upgrade. Have you tried any zoom lenses? I created 2 profiles for my 18-35 (one at 18 & one at 35) as a work around on the PD movie. Is this possible on the DJI system, or is it even necessary?

    • @kevinmpham
      @kevinmpham  8 месяцев назад +1

      Hey Anthony, thanks for tuning in. Congrats on your RS4P! Sadly I don't have a RS4 here I could test the LIDAR with. According to Cine Dailies, you're right in that the lens motor is storing the calibration data. Face tracking is weird, I'll cover it in a future post, but once your subject leaves frame for about 10 seconds, the focus square will reset itself, lol. I don't have any zoom lenses I can test, but I also recall Cine Dailies saying the zoom and iris profiles are separate from the focus ones, so perhaps if you stored both zoom and focus data for the 18-35, you could switch between them easily.

    • @kevinmpham
      @kevinmpham  8 месяцев назад +1

      Hey again Anthony. I connected my LIDAR unit with my side handle without the focus motor (the USB-C cable fried for some reason) and I was able to access all of my lens profiles. I think the profiles are stored in the LIDAR.

  •  3 месяца назад

    If the lens is listed in the pre-defined profiles in the app, does it mean we don't need to calibrate it?

    • @kevinmpham
      @kevinmpham  3 месяца назад +1

      I've read reports of those pre-defined profiles not being completely accurate, and I don't own any of the lenses to test. YMMV!

  • @Roman.the.explorer
    @Roman.the.explorer 7 месяцев назад

    Hey man, great video, thank you! How is the AF in your opinion compared to like mirrorless cameras?

    • @kevinmpham
      @kevinmpham  7 месяцев назад

      Hi Roman! Thank you, just trying to get it to work :P
      The AF is pretty good when it works, there are things I wish it did like waiting a lot longer before it resets. There's nothing like in body AF if you can deal with the lenses. It should be stated for the record though that I don't have any AF bodies or lenses, like a Sony FX or something.

    • @Roman.the.explorer
      @Roman.the.explorer 7 месяцев назад

      Thanks!

  • @MountUpMedia
    @MountUpMedia 3 месяца назад

    What parts are you using to rig the lidar on top of your Red?

    • @kevinmpham
      @kevinmpham  3 месяца назад

      Hey boss, check my other uploaded video, there's a breakdown there.

  • @matt.banton
    @matt.banton 6 месяцев назад

    Hey Kevin! Great video :) Are you based in Vienna? (Im from England but moved to Vienna a few years ago :)

  • @MisAnkic
    @MisAnkic 6 месяцев назад

    Can it be used with af lenses if I put them in mf mode?

    • @kevinmpham
      @kevinmpham  6 месяцев назад

      I think it can, you have to set hard stops manually though. I don't have any AF lenses to test this.