Sigma 4.5 mm Fisheye?

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OpticsEngineer Veteran Member • Posts: 5,735
Sigma 4.5 mm Fisheye?

Has anyone tried it? Any thing problematic to report about it?

I see it is available for Pentax at BandHPhoto. I have a little lab experiment that needs a really short focal length and would use only about the center 50% of the image. I would be using it on a K01 most likely since that is what I usually use in the lab, but of course I could use my K3 if for some reason that made more sense.

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