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Follow Focus matchup issues Arri SR2


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Okay, I'm confused and need advice. My camera is the Arri SR2 (converted to Super). My lens is the Cooke Varokinetal 10.4-52mm T2. These lens were made for Super 16. My camera came with a follow focus. See photos. The camera tech informed me several years ago that my ff will not work with my lens. Is that ff for a certain type lens? Why doesn't it work for my lens? I will be using that same camera and lens. I need a ff. What ff can I get and it will work?

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Edited by Eric F Adams
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Just pointing out that your lens gear is on your zoom ring. You may well want a gear on your zoom sometime, you can run a motor on it, old J4s are cheap now. I don't know how well you can zoom with that follow focus, I never did it, just used it for focus on primes.

 

Eventually, if you are patient or clever, you could have a decent 0.8 cine gear on focus and zoom rings. The iris ring has only about 6mm available space before you start obscuring the T stop numbers, so that's a bit trickier. I pulled my 10.4-52 from the cupboard for a look, the focus ring is a simple split gear with the clamp screw parallel to the ring tangent buried under the thread, a limited run factory item. These may still be around, cheap if you can find them.

 

There are some interesting modern options...there was a chap, selling on eBay, helicopter sean, making cheap gear rings that might be usefull, can't remember if they were CNC made, aluminum, or some higher resolution 3D print

 

(EDIT: factory item does not mean I imply it was made by cooke/arri. My guess is a third party)

Edited by Gregg MacPherson
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