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Canon MTF Question
I can't find a definitive answer to one simple question re: Canon MTF charts:
Do the black lines mean "wide open" or do they always represent f/2.8?
I assume they must mean "wide open" because of course some lenses only open up to f/4...but it'd be nice to get a clear answer.
Looking at the 35L for example...
http://www.usa.canon.com/cusa/professional/products/professional_cameras/ef_lens_lineup/lens_wide_pro/ef_35mm_f_1_4l_usm#Overview
Thanks!
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Re: Canon MTF Question
The black lines means wide open.
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