Originally posted by redimp One can argue that but what actually is the K-mount? It is a bayonet fitting, nothing more and in that respect no different to bayonet fittings used by other manufacturers. Like all bayonets, increased functionality is achieved by adding contacts etc. Again, the K-mount is no less capable of this being done to than any other mount. The only time that a change might be necessay to any SLR mount is for different format cameras and not ever FF as that is what the K is buildt for. it just seems like a nonsense to change it; absolutely no realistic reason to do so and plenty of reasons not to; unless somebody can tell me otherwise.
The flange distance is too deep to make a thin mirrorless camera that directly accepts legacy Pentax lenses. Hence the K-01 was a thick mirrorless camera and, though quite capable as an image generator, was universally panned for its form, its radical aesthetic design and for its retention of the "ancient" legacy mount.
Quite a few posters here (and reviewers in that community) have written off Pentax as hopelessly wedded to outmoded tchnology (the 45.46mm K-mount flange distance), preventing themselves from becoming all modern and hip, unable to make a sleek, skiinny shiny, hipster camera that's cool to carry.
Of course if you actually put a lens on one of those hipster cameras it isn't so sleek and skinny any more.
Those posters and reviewers see no problem with Ricoh shipping oodles of capital down to Pentax (in the midst of a global corporate restructuring) to design a completely new mount, cameras, and lenses to fit - at the same time as they design a full range of the best APSc K-mount cameras AND a full complement of FF K-mount cameras and lenses AND extend the 645D.
But they hate the Q mirrorless and its compact sensor even if it is a hit in the home market and a quite capable ILC in its own right.
We don't ask much, do we.