Sigma 45mm f2.8 › Optical Performance
28 positive · 8 mixed · 15 critical mentions across 51 sources.
MTF (resolution) The Sigma lens is already pretty sharp across the frame at f/2.8 albeit it doesn’t.
was clearly a major priority for Sigma here and I couldn't rate at any higher it's simply something else when a lens has built this nicely you just want to use it all the time well that's all very nice but more important is image quality let's start by testing it on my full-frame camera 42…
that it's still sharp at 2.8 right A lot of times you know if you shoot with your lens wide open so for example my Canon fds um especially about 50 millimeter if I shoot at 1.4 the image tends to get really soft almost to the point to where it looks like it's out of focus whereas with these
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