03 May 02 Mishka <[EMAIL PROTECTED]> wrote: > > Which brings me to the question, does anyone know, what may be the > reason for not making leaf shutter lenses for 35mm SLRs, like they have > for P-6x7 (and almost everything 6x6)? That would bring sync speed to > the *really* nice 1/1000!
Mishka, I'm just guessing, but... Cost, Complexity, (ease of manufacture, reliability, cost again... ), Slower fastest shutter speeds. The cost-benefit ratio probably doesn't make as much sense in a primarily consumer-market, hand-held camera like a 35mm SLR. But for MF or LF cameras that are more often used for studio work, and in a professional market where cost is less of an issue, an in-lens leaf shutter is probably easier to justify. On the other hand, some Topcon models were made with a "lens shutter" rather than a focal plane shutter. I've always assumed that implied a leaf shutter, but never looked into it in detail. Topcon PR II / DeJUR DEKON-SR -1960 - Lens Shutter Reflex WINK MIRROR - 1960 - Lens Shutter Reflex WINK E MIRROR / TOPCONETTE Beseler - 1962 - Lens Shutter Reflex WINK S MIRROR- 1963 - Lens Shutter Reflex WINK MIRROR (Prototype) - 1962 - Lens Shutter Reflex WINK MIRROR S II (Prototype) - 1963 - Lens Shutter Reflex UNI / RE Auto Hanimex / AUTO 100 Beseler 54 A 1965 Lens Shutter Reflex UNIREX - 1969 - Lens Shutter Reflex UNIREX EE - 1970 - Lens Shutter Reflex OPC (Obligatory Pentax Content) -- Pentax claims the first automatic-shutter camera (aperture priority AE) in the ES, introduced in 1971. But isn't there some debate that they were beaten to the punch by (?) the Topcon Unirex EE, introduced in 1970 ? I'm working with some old neurons here, so I'm not certain... Regards, Tim Engel - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
