Originally posted by Rondec In order for it make sense for Pentax to make a full frame camera, they have to have a line up of lenses that are available new (from Pentax) to use on the camera. Few people are going to buy a new camera specifically to use old lenses (although Pentaxians might if they already own them), but from Pentax's standpoint, they have to see a way of making money, which means selling new lenses.
Yeah, during a previous interview with Pentax, they said that the image circle for existing FF lenses might not be enough to account for the in-body shake reduction of a potential full-frame sensor. Not sure why that would be true, since it would seem the sensor doesn't need to move much.
So personally, I speculate whether the future FF body would have some kind of limitation, such that existing FF lenses would work only with some limitations, like SR turned off. Or, maybe you will get a built in slight crop factor when using existing FF lenses, but you can get the full 24x36 only when using the next generation of lenses. The limitations could be for either technical or marketing reasons.
Come one, would Pentax really "cripple" old lenses? Heh heh .... see many threads on the crippled KAF2 mount.
I guess I am not sure it is clear what "FF" really means, in the context of the future body.