VS> I also have a Zenitar, and did some experiments with wideangle filter in VS> Gimp. Results were not perfect, but not so bad even.....
Try the PTLens. Newest version has customisable defishing function (as
well as chromatic aberration control), and it also has a profile
exactly for the Zenitar on 1.5x crop cameras. Works quite well from
when I tried it on some sample fisheye photos.
Good light!
fra
