Hallo, Pentax has copied the Nikon F80 with MF-lenses non compatiblity. But now Nikon is one step futher, read this:
A surprising feature of the D2H is its improoved backwards compatibility: A basic matrix meter when it is used with non CPU-lenses. Of all AF-cameras only the F4 had this feature. The D1/D1H/D1X series and F5/F100 didn't have it. I find this move to increase backwards compatibility quite astounding... I hope, Pentax is also copying this kind of compability. So, for Nikon backwards compatibility is a selling argument. Why not for Pentax? Regards Rüdiger