how to do proper micro adjustment

Started Feb 12, 2013 | Discussions thread
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The target distance is dependent on focal length
In reply to kev777zero, Feb 12, 2013

Canon recommends the camera-to-subject distance should be no less than 50 times the focal length of the lens. For a 100mm lens, that would be at least 16 feet. For zooms they recommend to set it at the long end.

There is also a completely automatic program using software from Reikan which is a real timesaver if you have multiple lenses and/or bodies. Just tether the camera to a computer and center the lens on a test target provided by them at the appropriate distance. The pro series even has additional programs like finding the sharpest aperture for any given lens and dust analysis.

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