On Sunday, April 3, 2005, at 06:51 PM, Bob Shell wrote: >> Wasn't the Contarex one of the very first, if not THE very first, >> 35mm SLR with pentaprism finder, rapid return mirror, interchangeable >> lenses and automatic diaphragm closing-and-opening - the things we >> all expect in a fully functional SLR? > > The Contarex was a weird design. While it did have instant return > mirror, the lens diaphragm did not reopen until the camera was cocked. > I believe I remember correctly that the Gamma Duflex had lenses with > diaphragms that reopened right after the exposure was made, and was > the first SLR to have this. Hmmm. I didn't know this. Thanks, Bob, for the information. Ardeshir <http://homepage.mac.com/ardeshir>