I know that sometimes a lens/body combo needs to be micro-adjusted to attain ideal focusing behavior, and that this is usually because of sample variation, but which parts of the lens and/or body are actually the primary causes of front/back focus?
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It can be any number of different things. It all comes down to the tolerences that consumer cameras are built to. Typical suspects would include:
It is all about the location of the focal plane as outlined here: What is back-focusing? |
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