So I got a 40mm ltd and it had serious backfocus issues. The shop i got it from replaced it and the new one blows me away.
So i got my myself a 70mm ltd. Of course i tested it for backfocus with a few quick shots and it seemed fine. I got out and shot with it over the last 3 days and my happiness slowly faded. I kept finding myself pushing it to f/5.6. And at 5.6 i am happy. But every time I go any more open than that it is a bit of a lucky dip.... it is so hit and miss and wide open it is very miss.
So i set up a proper test tonight and...DAMN! this one front focuses. Why why why?!?!
Both shots below are from different distances. I shot at least 20 pics from each distance and the results are the same every time. For petes sake! That is two ltd i have bought and 2 of them have issues.
Needless to say i am very unimpressed with pentax quality control.
When these lenses get it right they get it VERY right but so far 100% of the limited that i have bought have started off as lemons.
The shop will think i am a freak, 2 lenses, 2 complaints.
I am cursed.
cheers
mike