Originally posted by Rondec Are you talking thirty years till this k mount demise or a lot shorter? I don't really understand what is wrong with the f mount or the k mount that would be fixed by going with something like the FE mount.
The flange distance is excessive. That's all that disturbs me with the K mount. When the switch to mirrorless is made (and I have no doubt it will happen, as mirrorless will be at least as good as SLR in all areas, or better than that), and other brands have introduced lenses designed for a shorter flange distance, then being stuck with K mount is a disadvantage leading to larger body + lens combos when they don't have to be.
And IMHO having the lens and body in a compact but not too light combo is better for stability. My K-5 + DA 50 1.8 is about as heavy as my K-5 + DA 18-55. At 50mm I can get much longer exposures without camera shake on the 50 1.8 than on the 18-55, which has the weight spread out more. Let alone being able to pack more stuff in the camera bag (or have a smaller camera bag).
Ideally Pentax, when making the switch to mirrorless (even if only half way), will introduce a new mount and new lenses meant for it. Don't be late to the party. They also have to offer an adapter that makes using K mount lenses absolutely problem free, without any drawbacks (so proper and fast AF, metering, has to be solid, ...), and ideally it should be offered in a kit with the new mirrorless camera. Maybe the body/new mount won't support screw drive AF anymore, but then the adapter needs to have a motor (have the motor around the lens mount, connected to a gear that sits where the screw usually is?).