Canon 22mm f2 › Vignetting
1 positive · 6 mixed · 13 critical mentions across 20 sources.
The second problem is about those dark corners.
nice and straight the bad news those corners are very dark at f2 at f 2.8 there is some improvement the dark corners are pushed away getting a bit better at f4 but not very pleasing let's switch on the peripheral illumination correction from the camera and start again at f2 with the correction…
When you stop down to f11, a little softness is creeping in due to the effects of defraction.
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