I recently purchased a Z-1I have a Sigma 2.8/70-200 EX wich has compatibilty problem with the SuperA (Super Program) but not with the Z1 and the MS-S.
I have used two Sigma lens on it The camrea sometimes decides these lenses are f1.2 (24-70 f3.5-5.6/28-90 f3.5-5.6)and wont focus. I have also used Pentax current 50mm f1.4 and an old Pentax F 28-80 with no problems.
Do I have a compatibility problem or a camera problem
Michel
