Quote Originally Posted by neuroanatomist View Post
Those 'peaks' are pretty broad - mine were much sharper on both the 5DII and 7D (see graphs). When I see inconsistent results with FoCal, my first question is lighting - what were the typical EV's reported for your testing? Mine are always in the 11-12 EV range, and I get consistent results with most lenses.

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Good point! I'm not that "bright" 7.8 EV from a 500W spotlight.