In a word, cost. Check out the price on those backs. I believe the Phillips CCD is the first affordable 24x36 CCD, but even with it cameras would be in the $7K range. Like all electronics, big CCDs are getting cheaper and we will, no doubt, see some reasonably priced full frame sensors "real soon now".
Why are add on backs available for 2-1/4 cameras and not 35mm? That is simply an issue of back spacing. The difference between the back of the camera body and the film plane. You will note the digital backs are available only for cameras with interchangeable backs or magazines. But of course separate bodies can be made that use the same lenses and viewfinder system as their film cameras. Several manufactures already do so. Ciao, --graywolf ---------------------------------------------------------------- ----- Original Message ----- From: Michael Perham <[EMAIL PROTECTED]> To: Pentax Discussion List <[EMAIL PROTECTED]> Sent: Sunday, December 02, 2001 4:50 PM Subject: 24 X 36 Digital Image Sensors > I was just browsing Mamiya's web site and noticed that amongst the > numerous digital backs available for their 6X7 cameras, the two most > popular size of image sensors are 72 X 96 and 24 X 36; the 35 mm format. > > If this size of digital image sensors are so readily available, offering > 6.3 megapixals and a 12 F-stop dynamic range, why is there such a dearth > of 35 mm digital SLR camera's with 24 X 36 sensors, and such a > preponderance of cameras with smaller sensors that require a +1.5X > factor using standard 35 mm lenses. I can see smaller sensors in ZLR's > (camera's with non-interchangable zoom lenses), but if using a body > designed to use a manufactures existing line 35 mm lenses, then why not > offer 24 X 36 sensors? > > Any thoughts? Mike. > - > 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 . - 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 .
