>>3227820>Look at the lenses in 35mm point and shoots. They’re tiny, but they cover full frame.Most of them are really fucking slow (if it's a zoom, f/12+ at the long end is common) and optically subpar by modern standards, the few exceptions now fetch stupidly high prices on ebay.
Basically, for a given size of the camera you can make a big sensor with a slow lens or a small sensor with a fast lens, which will give roughly the same results, and you just optimize for price.
>Look at the lenses from the Pentax Auto 110 – they cover APS-C.A 110 frame is almost exactly the size of 4/3 sensor.
>Look at pancake lenses across all systems; they’re all about the same size regardless of coverage.Yeah, if you forget about the body. A "pancake lens" is just a lens with a construction matching the flange focal distance; note how pancakes for 35mm SLRs are mostly in the 40-50mm range while pancakes for M-mount are around 20-24mm.
>>3227966>before long we will have affordable, compact medium format cameras.Depends on your definition of compact. You can theoretically make a pocketable camera around GFX's sensor, but you'd have to sacrifice lens speed and battery size, and you would essentially end up with another Sigma DP Merrill. An ILC built around a medium format sensor must include a wide mount, so they aren't going to get significantly more compact than X1D already is.
