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Follow focus with movable lens barrels


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#1 Sam C Roberts

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Posted 18 April 2014 - 12:31 AM

Hi....I just rented a Zeiss 85mm PL mount lens and I notice that when you focus it the whole outside of the lens barrel moves forward and back making it impossble to use my Cinevate follow focus.

 

How do you do follow focus on such a lens (other than by manually turning the focus ring on the lens with your hand?)


Edited by Sam C Roberts, 18 April 2014 - 12:34 AM.

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#2 Gregory Irwin

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Posted 18 April 2014 - 12:45 AM

Hi....I just rented a Zeiss 85mm PL mount lens and I notice that when you focus it the whole outside of the lens barrel moves forward and back making it impossble to use my Cinevate follow focus.
 
How do you do follow focus on such a lens (other than by manually turning the focus ring on the lens with your hand?)


I'm guessing that this is an older design where the lens physically "travels". In the past, we had to use extra wide follow focus gears that could accommodate the travel. Newer designs allow the elements to travel inside the barrel in order to not have this issue among other things.

G
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#3 Sam C Roberts

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Posted 10 May 2014 - 07:48 PM

Thanks Gregory...yes the newer PL's are different.... it is only this one 85mm that I had this problem with.


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