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Tips for pulling focus on SLR lenses?


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#1 Salil Sundresh

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Posted 08 September 2010 - 01:26 AM

What are some techniques besides going blind squinting at the monitor all day? A lot of the witness marks seem to change from stop to stop or aren't exact.
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#2 Terry Runner

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Posted 08 September 2010 - 12:57 PM

What are some techniques besides going blind squinting at the monitor all day? A lot of the witness marks seem to change from stop to stop or aren't exact.

Well depending on the application alot of people are going with the Z-finder from Zacuto....and If its a set shot and you do not have to refocus then you can zoom in x5 or x10 in the live view mode before hitting record.

Edited by Terry Runner, 08 September 2010 - 01:02 PM.

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#3 Salil Sundresh

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Posted 10 September 2010 - 04:08 AM

Well depending on the application alot of people are going with the Z-finder from Zacuto....and If its a set shot and you do not have to refocus then you can zoom in x5 or x10 in the live view mode before hitting record.

Right but then the operator can't see an image.
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#4 Adrian Sierkowski

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Posted 10 September 2010 - 10:53 AM

Best bet would be to upgrade to a Compact Prime rental and or purchase, as their witness marks are properly calibrated across all stops and have a further throw. I suggest these as they are mount agnostic (e.g. can be Canon/Nikon or PL)
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#5 Allen Achterberg

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Posted 20 September 2010 - 05:46 AM

its Part of the "new non cinema camera" testing the industry is doing. You will just have to remark, learn to be fast with that, and it will serve as a great way when you get to use standardized gear, you will notice now you can afford a smoke break. Explain to the DP what the issue is, and they should be understanding, and we all want the same goal, sharp images. Thats the price production pays for shooting with non standard gear, not necessarily made for our business (but somehow we can use them for it)
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#6 Dom Jaeger

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Posted 20 September 2010 - 08:23 AM

Basically you're being asked to make a silk purse for the clients from a sow's ear of a system.

On a lighter note:

.. they are mount agnostic (e.g. can be Canon/Nikon or PL)


Nice term. Makes me wonder though...are PL mounts Catholic? Nikon mounts Shinto? PV would have to be Amish... :D
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#7 Chris Keth

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Posted 20 September 2010 - 09:51 PM

Not only will witness marks change from stop to stop but also as you zoom in on most zooms built for stills. They are not necessarily parfocal like cine zooms.
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