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20mm vignetting, a problem?

Started Jun 3, 2012 | Discussions thread
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20mm vignetting, a problem?
Jun 3, 2012

Reading a lot of tests of the 20mm 1.7 I came across this:


As seen here, 1.7 to 4.0 not useful at all. Also mentioned in some other reviews, but not dpr. And not found anything in this forum.

So, is it true? If so, how can it be fixed? For raw? For jpeg?

Otherwise very few "cons" and a lot of good things, as seen in lots of threads here.

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