(Edit: Found a way to use the regular focus mechanism instead of SDM. I downloaded a hacked firmware that took me back to 1.10, then upgraded to 1.20 that don't support SDM (don't know if there are any more changes in the 1.30 firmware).. Anyway... it works fine and my DA* 50-135 is focusing just fine now without the SDM)
Original message:
I own a DA* 50-135 with failing SDM. If the lens hasn't been used for a while it takes some time to get it started. If I spend 10-20 minutes on focusing back and forth I eventually get it to focus normal. Then if it lays for a few days it's the same thing. Feels like it gets worse each time - so Yes! I want to be able to chose focus mechanism.
Really sad/bad that a such expensive lens have this problem. Started after 14 month and no warranty at all as I'm the second owner.
I will not buy any SDM lens until this is fixed.
Last edited by peteng; 11-01-2009 at 03:02 PM.