Photo Vlog 10: Infinity Focus Calibration
Sometimes you want to be able to check and calibrate the infinity focus of one of your cameras. This need is especially prevalent with home-built "project" cameras, or really any suspect camera that doesn't use through-the-lens focusing. No matter how good your photographic technique is, if your camera/lens is out of calibration then your pictures will likely be out of focus.
In this video, I'm going to demostrate two different techniques for checking infinity focus calibration of a camera/lens system. I'll first demonstrate the more obvious "focus on a distant object" method, then I'll show the more interesting (and possibly better) "camera as a collimator" method.
00:00 - Opening
00:08 - Introduction
02:39 - Distant Object Method
06:41 - Camera as a Collimator Method
14:20 - Wrap-up
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How to adjust infinity focus using a camera as a collimator
http://www.addicted2light.com/2013/08...
Cameradactyl Brancopan
https://www.kickstarter.com/projects/...
https://www.cameradactyl.com/buttergr...
Forum threads about Mamiya Press lenses and calibration issues:
https://www.photrio.com/forum/threads...
https://www.photo.net/discuss/threads...
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