I've never seen one, it's considered a cult classic. It's supposed to be close focusing, sharp and contrast for a mirror tele. IIRC the lens mount isn't interchangeable so it will only work on the camera it's made for. (I don't know that last part for sure however).
You can read a bit about the Sigma 500mm f4.0 utltatel here at the wayback machine's archived copy of Monaghan's 3rd party 35mm lens megasite. http://web.archive.org/web/20041209100811/medfmt.8k.com/third/cult.html J wrote: > Does anyone know anything about this lens. It is a big mirror lens.A > local person has one for sale in brand new shape with case,Pentax > mount ? Thanks Joe > > > -- Entropy Seminar: The results of a five yeer studee ntu the sekend lw uf thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
