how would you sync the shutter of the camera with the sensor? the same applies for iso.
Using the flash sync to turn the sensor on? How does it know when to turn off though? You could set the ISO with a little dial on the digital back. Also, film advance would be difficult.
So yeah, I think a cheap aftermarket digital back would be a crap idea. The only real advantage would be the 'feel' of using an old camera (i.e. metal knobs and levers rather than plastic buttons). Otherwise DSLR + old lenses.
Using the flash sync to turn the sensor on? How does it know when to turn off though? You could set the ISO with a little dial on the digital back. Also, film advance would be difficult.
So yeah, I think a cheap aftermarket digital back would be a crap idea. The only real advantage would be the 'feel' of using an old camera (i.e. metal knobs and levers rather than plastic buttons). Otherwise DSLR + old lenses.