Originally posted by Serpiente
Pentax will only say that it is Full Frame if it is really 100% sure a full frame lens. A accidentally working lens, optimized for APS-C won't do it. A full frame lens has to be sharp for the whole image circle of a full frame.
I hope they will release a HD DFA 50mm 2.8 Macro WR with the new full frame body. Good alternative to the DA35 Ltd.
But in consideration, the DA lenses that work on FF in that thread were given the requirement of either no loss of corner IQ or small loss only. So the DA 35 F2.4, DA*55 F1.4, DA*200, DA*300, and DA*60-250 work on FF with good corner quality.
Would be nice to have a DFA 50 WR yep.