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

Started Oct 26, 2012 | Questions thread
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malch Forum Pro • Posts: 13,130
Re: Sigma 30 strange effect? Or what is going on here? An optical puzzle.

cwinte wrote:

Just redone the test with no UV filter.... NO GHOST AT ALL with Sigma.

Yup, as soon as I saw the first image, I thought UV filter.

Don't waste your time on cheap filters. A good B+W multicoated filter is generally okay; otherwise no filter at all.

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