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11-02-2007, 01:18 PM   #16
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QuoteOriginally posted by roscot Quote
Or just grab PTLens and defish the image. The Z sounds like it will do what you want. It has an effective POV of about 13.5mm when defished. also, stopped down it is very sharp.
Interesting, I wasn't aware that the focal length changed when defished... although thinking about it that makes sense.

I'm on a Mac, and PT Lens unfortunately is not available for Mac. So far, I haven't been able to find a reliable alternative. Anyone else know of one?

Could anyone post some samples of "de-fished" zenitar 16mm images?

11-02-2007, 01:59 PM   #17
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The focal length does not change, but the field of view of a fish eye is much wider than that of a rectilinear lens of the same focal length. Although there will be some cropping, you retain most of that extra pov when you defish,.

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