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Help determining optimal aperture on lens

Started Aug 11, 2014 | Discussions thread
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Ronan_M
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Help determining optimal aperture on lens
Aug 11, 2014

Got a few lenses (some Nikon, some Sigma) and I'm trying to determine what would be their optimal (read: sharpest, less CA, less distortion, etc) aperture. General common knowledge indicates ~f7.1-f8 but I want to understand if there is a better way to determine this for each individual lens.

I'm guessing just testing each one out? Any other views?

thx

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