Zeiss Biogon 21mm -- f/2.8 or f/4 for Nex-5N?

Started Feb 10, 2012 | Discussions thread
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DavidB2
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Zeiss Biogon 21mm -- f/2.8 or f/4 for Nex-5N?
Feb 10, 2012

Does anyone know which of the f/2.8 or f/4 versions of the Zeiss ZM 21mm Biogon performs better on the Nex-5N? (Obviously from f/4 up ) Or do they perform essentially the same? Thanks!

Sony Alpha NEX-5N
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