celluloidprop
Well-known
But the technology to put a rear element so close to the sensor with good results hasn't. I'm not an engineer, I don't know all the technology involved in the guts of a digital camera. For now, the smallest full-frame digital is the M9 - which is still noticeably larger than a film M. Presumably there's a reason for that.But knowing the rate of technical advancement it should be here by now. The APS sensors have been available, cheaply for what, nearly 10 years now?
My logical assumption is that if a XA-sized full-frame compact were feasible at any reasonable price point (or feasible at all), someone would have done it - because they would make a killing.