Roger Hicks
Veteran
He certainly did explain about the lack of market, but I still don't see the technical problem in making a back adaptable to a 35mm camera.
Let me ask this, and maybe I'll have my answer:
On a Hassie 500 CM with a digital back, how is the capture done?
Does the lens need to be open on B, and the capture is digital, making it usable only in the studio?
If it's the case, well yes, I see the huge problem...
Getting the sensor into the film plane, which is 35mm wide. You'd need to machine out the film rails and film guide, because a 'full frame' sensor is a good deal bigger than 35mm wide. Then there are all the connectors around the edges. As rxmd explained, with a camera that's designed to take interchangeable backs in the first place, it's (comparatively) easy. If you have to machine out the film gate, it's a LOT more difficult and expensive.
Yes, Leica managed a dual-platform 35mm/digital camera, but it was designed that way from the beginning. With the exception of a handful of interchangeable-back 35mm cameras, no others were designed that way.
Cheers,
R.