Originally posted by bossa A mirrorless 645D would probably turn out to be the same size as a D800. Imagine that with an 80MP sensor?
645 has a huge flange distance compared to any FF SLR.
So I have no idea how will they overcome that issue to make camera smaller; it may borrow a more of Leica S look, but they'd be crazy to make all 645 lenses usable through an adapter.
I think we see a problem in their plans ; they should apply a K-01 mirrorless idea on 645D, never bother with K-01 but issue an FF K-mount DSLR instead of K-01, and steadily work on a real mirrorless for the masses.
All in all, it is very likely that they have miscalculated the time of the FF offensive of others and were caught by surprise, at least by a year; Nikon and Canon hurried up, Sony followed quickly. No one was waiting for Ricoh to approve of their plans.