Originally posted by luftfluss You'd likely need an external power source for that, or a new Q with a bigger battery. It might be feasible to develop a unit similar to the Nikon FT1 (for the Nikon 1 line) which will AF only with motor-driven lenses.
No, not a external battery, a internal battery in the converter.
If Pentax chooses only SDM and DC lenses for a converter, you only have DA55, DA16-50, DFA24-70, DA50-135, DA200, DA300, DFA70-200 and DFA150-450 + Sigma.
And then F/FA and the limited lenses donīt work. So DA35Macro, DA40, FA43, DA70 and ... that can be nice as telelenses with autufocus donīt work.
So whatīs the point?
OK, perhaps DA16-50 (is ~75-230mm at Q7) works to go around with (and DA55 ), but a Q on DFA24-70 handhold?
A battery holder/ grip in the front instead of that round thing on QS-1 are good too (also without a converter).