My 24-120mm F4: at 24mm corner vignetting not equal. Does this indicate a problem?

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leicaman
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My 24-120mm F4: at 24mm corner vignetting not equal. Does this indicate a problem?
1 week ago

Hi,

I was doing an out of focus F22 test for sensor dust with the lens set to 24mm. When I pulled up the image and pulled up the contrast in LR5 I was surprised to find that the upper right corner of the frame had significantly less vignetting than the other three corners of frame.

I know the lens vignettes... but shouldn't all 4 corners vignette more or less to the same degree?

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