which raises an interesting question; is there a really wide field simple design which would yield better results if the film plane were properly curved? IIRC, we used to have a slightly curved film holder assembly for some of our telescope setups (60" Bethany observatory at Yale)? I know the minox had a curved film plane IIRC too for similar reasons, right? one reason I am interested is for ultraviolet photography using quartz optics, where each element costs major $$; a fairly simple few element design for wide angle work would be handy ;-) regards bobm PS see http://www.smu.edu/~rmonagha/mf/uv.html on UV photography etc. using uncoated low cost lenses and making quartz optics and filters etc _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
