Originally posted by nosnoop They need new mirror box, new sensor, new shutter, new pentaprism, new camera chassis, new image stabilization system, new focusing screen, redesigned electronics and image processor...
and don't forget the new line of FF lenses.
I wouldn't call that nothing or even insignificant R&D costs.
This assumes they reuse their existing AF system.... and many would not be happy about that.
You make it sound like Pentax didn't exist before APS-C dSLRs. They've been making FF SLRs for years, so the "R&D" needed to make another one would hardly be staggering. A new sensor is needed for ANY new camera, a new mirror box, shutter, pentaprism, chassis and focusing screen are hardly challenges for Pentax, the new image stabilization system is already designed (you'll find a link around here someplace), and the new electronics and processor and upgraded autofocus are also going to be needed for ANY new camera (and can be recovered in terms of costs across multiple bodies). This isn't a new
Moon landing, for cryin' out loud! As for lenses, they can just make them all FF from here on, with just a single "specialty" APS-C lens to cover the extreme wide end. There was never any size/weight difference for lenses of the same focal length and maximum aperture anyway, since APS-C was designed around the FF mount and register distance.