Originally posted by monochrome Unless James Malcolm outright lied to me and 7 other PentaxForums members on the telephone April 30, 2013 (when without prompting he discussed the future of Pentax mounts), "Pentax is committed to Q, K-mount and 645."
Then again, (cynically parsing) that doesn't preclude being committed to K-mount as their APSc mount and designing a 4th mount dedicated to FF.
Ducking
I wonder: would it be possible to produce a mirrorless 645D mk 2 which is little if any larger than a D800 or 5D mk 3, say? And with a sensor which blows absolutely any current FF camera clean out of the liquid? Plus rangefinder-style hybrid OVF with focus-peaking overlay?
Unless Mr Malcolm was misinformed, in the sense that he was passing on inaccurate information from HQ Japan which he had every reason to believe was actually true, then it's hard to find a way round what he said. Either FF, if it is ever launched, will use K-mount lenses or it will use a new mount entirely with, presumably, an adapter for K-mount lenses. That's assuming it is ILC FF. If a fixed mount like the RX1, then anything is possible.
I suppose an alternative is that FF is not coming because Pentax Ricoh have found some magic in a remote yogin's cave which allows a dramatic increase in APS-C performance. So, when you want a high-res landscape, for example, you can set the camera to combine three shots in one using sensor-shift per pixel, yielding a RAW file of 2-3 times the sensor resolution; and when you don't need that, you simply switch back to single shot. It could be run off a setting similar to the bracketing settings already on a K5. However, pulling this off would need massive camera electronics which wouldn't be cheap or nice to batteries, I'd guess.