Hi Zuiks,
Here is an interesting technical article comparing various fisheye lens
designs,including the OM
8mm lens, which it turns out has distortion on the higher side of the lenses
discussed. It also
gives the patent numbers so you can look up the patents.
http://www.coastalopt.com/pdfs/fisheyep.pdf
Regards,
Tim Hughes
TimHughes@xxxxxxxx
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