Originally posted by photoptimist There's no need for conspiracy theories of buried patents.
The real problem is that the film gate of an SLR is optically incompatible with a digital sensor of any reasonable size. A film SLR is designed so the focal plane is flush with the film rails which is what you get with a film emulsion. But the photosensitive silicon surface of a digital sensor is typically recessed 1 to 3 mm from the physical front surface of the chip to allow space for a protective glass cover and the interconnect wires at the edge of the chip.
This was in my April 1 mindset. Just because I'm paranoid, doesn't mean they aren't out to get me
The film plane issue would be a problem, but I think engineers could work out a solution GIVEN an economic incentive. I believe Kodak, Fujifilm, Ilford, etc, as well as Canon, Nikon, Sony, Ricoh, etc. would be powerful influences to stunt a non-kickstarter from opening that Pandora's box. But again, anything is possible on April 1.