There's a lot of light fall off in most ultra wide angle lenses. The sensor will be adding under exposure effects when that happens as well.

Jim King wrote:

Mischa-

I wondered about the DOF too, but I see the same results with scenes where the entire image is at the same distance from the lens.. Look at the edges and the upper right corner, which at the same distance as the wall. The image at f5.6 is really fuzzy and low in contrast in that area, while the image at f11 is pretty good.

Regards, Jim




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When you're worried or in doubt, Run in circles, (scream and shout).

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