Calibrating Your Cinema Lens | How & Why To Shim A Lens

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Chapters:
Intro - 00:00
What & Why? - 00:13
Camera Back Focus - 00:52
Working On A Lens - 02:03
Our Lens Servicing Department - 02:25
Preparing - 02:47
Step By Step Guide - 03:39
Considerations - 09:18
Outro - 09:51
#CineLens #ShimmingYourLens #HowToShim

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Опубликовано:

29 июл 2024

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Комментарии : 32

@martinpolerecky5472 2 года назад

Great tutorial, worked 100% and I managed to calibrate even Meike MFT lenses also.

@the_black_douglas9041 10 месяцев назад

Does anyone else find these kind of videos very soothing? Or is that just me? 😂 Also very useful! Thanks CVP!

@ReubenEvans Год назад

Great work - this answered a lot of questions for me that I didn't know I had!

@conrad2nr 2 года назад

Excellent topic. Thank you for this thorough breakdown.

@timmichalak6956 2 года назад

This is by far the best tutorial on shims. Thank you so much for explaining this!

@foglebr 2 года назад

That was pretty nice. That’s also a very nice engineering shop you’ve got as a service for your customers.

@OwenCrowley 2 года назад

Thank you for this.

@DynamicPhil84 2 года назад

Great tutorial guys, thank you! I had requested this previously and this really demystifies the shimming process! Another question though. Why is it that some cinema zooms, like the DJO Pictors, need to have shims adjusted based on the camera you are using, while other cinema zooms, like the Tokina ATX and Fujinon MKs, do not? I have the Tokina ATX 50-135 and have had no issues with its parfocal-ness (is that a word?) when swapping between a Red Komodo and Sony A7Siii. I also used the Fujinon MK 18-55 on the A7Siii and it has a handy back focus lever. I guess that lever does the trick for the Fujinons, but why no need to make any adjustments with the Tokina?

@wasislos 2 года назад

Thank you so much for providing this information. Very helpful in these days of PL mounts for komodo and bmpcc's p.s. if you remove all the shims should lenses work properly on PL original mount cameras like alexa mini/red gemini?

@joyoffilming9500 Год назад

Thanks so much for this tutorial. I had an issue with my Lumix S1H and the anamorphic lens Sirui 50mm T2.9 full frame: when focus was set sharp on infinity the lens barrel indicated a distance between 5 and 15 m - and, still some degrees left to go on the barrel until the hard stop. No chance to do quick manual focus moves from the foreground to the infinity background which drove me nuts. And even worse, although the lens worked great in combination with my Ronin RS2 and the 3DFocus for in-range distances of the lidar sensor (up to 7m) it completely messed up my shots when pointing at the infinity of the background - because the calibration procedure of the 3Dfocus assumes infinity where it should be on a lens, namely at the end of the barrel rotation. With a set of shimmings from Sirui and your video I could adjust my lens within 30 mins by using the S1H's built in focus peaking and focus magnification. No need to adjust any other distance meterings on the lens with true distance. It was all about hitting infinity at the end of the focus way.

@Tater2018 Год назад

I cant find the DZO Vespid/pictor shims anywhere! Will any other brands of shims work for them. I cant focus on infinity with my 35mm.

@MrBazsi888 Год назад

i have komodo and red pro prime. what to do ? thanks.

@specularproductions-svense3231 10 месяцев назад

does someone know for the catta zooms which shims are in it originally from factory?

@chrismapes2954 2 года назад

What happens if you cant remove any more shims? I have all of the shims out and cant get the backfocus to set to correct distance.

@vishkumar 8 месяцев назад

What camera and lens you use to film your videos?

@jeffslade1892 Год назад

Thank you. I wish to swap ocular lens between to early and late model zooms, the newer lens is scratched. These are not cine lenses and calibration is not super critical. The shims are different. Do I swap the shims with the glass or leave them on the body? Do the shims "belong" to the glass or the body?

@TobiasBx 2 года назад

Nice video Body good luck From Germany

@moizabro8554 2 года назад

Wheres your Red V-Raptor review?

@Lostinaminute 11 месяцев назад

Wait so how do I properly shim a lens mount if you’re using a mount converter?

@NewsOneLive 7 месяцев назад

You knew far more aboiut this that SONY cine professionals. Their response was we dont comment on the perfermance of third party lenses. No helo from them whatrsoever.

@jopvandekam 4 месяца назад

Can shimming reduce chromatic abberation?

@IanCDunneFilmsNC 2 года назад

Anyone know shim totals for EF canon c70 and the new DZO Catta Aces?

@IanCDunneFilmsNC 2 года назад

If anyone needs to know - shimming for FF Catta Ace Zoom for canon EF for 70-135 is .62. Shimming for 35-80 is .69 (NICE). Done with the canon c70 with RF to EF .71x adapter.

@hbmorris5558 2 месяца назад

Can you recommend a lens shop that is up to CVP's standards in the US? I am looking to have my Canon C500 mark II lens mount properly shimmed as well as my full set of XEEN primes lenses. I would very much appreciate your assistance!

@CVPTV 2 месяца назад

I would check out Duclos Lenses! - www.ducloslenses.com Jake

@girafingo9280 2 года назад

@jake - what camera was this shot on? Skintones looks amazing.

@CVPTV 2 года назад

The piece to camera? If so Canon C200. Jake

@girafingo9280 2 года назад

@@CVPTV cheers

@isaacbedford3644 2 года назад

Anybody know of any places in Los Angeles that can do this?

@vidiot9000 2 года назад

Steve’s camera service

@YeahWhiplash 2 года назад

Evidence Cameras in Glendale

@michaelprzewrocki4195 Год назад

old lenses made for film which is IR-sensitive. digital chips arent: so analoge lenses dont reach infinity. no shimming is helping. adapters must be adjusted. best: variable register adapters. i made one to shoot P67 on EOS. and getting best focus at real infinity. which isnt 2.7 but at least 7.8km. could compare with novoflex Noflexar 200mm lens which is going beyond infinity. Novoflex newest P67-adapter-system is going beyond infinity. so are doing newest Zeiss lenses. Batis Milvus Otus Tout. dont understand why using shim. viewfinder telling how to focus. cam with adapter have right register. lenses not made for digital!!! adapter must be shorter than register! shimming useless its the other way round, adapter adjusted or lens must go beyond infinity. NB: just found a tripodcollar attached to front of p67-200/4 new can also be used as focus-blocker. when lens is going beyond infinity.