Sigma 30 strange effect? Or what is going on here? An optical puzzle.

Started Oct 26, 2012 | Questions thread
shantu
New MemberPosts: 3
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Re: Sigma 30 strange effect? Or what is going on here? An optical puzzle.
In reply to cwinte, Oct 26, 2012

from the first picture it looks like a finger print smudge. Did you check that the lens was clean?

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