In article , fcollins@gonix.com says...
>In article <8B6457C.0008002AED.uuout@fotobank.nl>, w.j.markerink@fotobank.nl
>says... (...)
>>I read an article about the Kowa six, and noticed that there once has
>>been a 19mm *circular* fisheye for this camera. (rest deleted)

And a 35mm rectangular-perspective super wide that appears to have been
quite sharp. Darn! Sometimes it seems like the best/most interesting
products sink and the worst/dullest float - maybe yet another example
of the power of salesmanship to triumph over quality/content.
(Never was a Hasselblad fan - too much trouble and too little offered
relative to the cost, and to what others offered [at much lower price],
but, then, don't get me started on Leica vs. Nikon again......;-)
Hope this helps.