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Sigma 10-20 i FF? No way.
Pewnie masz rację,Ja uzywałem tylko z APS-C ,ale jak ktoś ma:
z dprview:


Re: Sigma 10-20 on full frame?
In reply to theNeverKings, Oct 17, 2012
10-20 f/3.5 is useable till about 13mm (with some vignetting). Below this a rectangular black border will appear. Here's a sample picture with the 10-20mm f/3.5 on a 5D M II at ISO 200, 12mm, f/3.5, 1/13s.