Originally posted by creampuff All this while when people mention they got FF with their K-5 cameras, there is little or no mention of the lens used when they test. The natural assumption is that the camera is the problem when it could just as well be the lens that could require focus calibration.
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What you are missing is that the FF problem occours in low light levels. Below EV4 for example.
So calibrating the AF for a particular lens in 'normal light' makes no difference to the FF in low light problem.
You want mention of specific lenses... OK, no problem ..... I have calibrated my K-5 with my following main use lenses ..
Pentax DA* 50-135mm
Pentax DA 10-17mm
Pentax DA 14mm
Pentax FA 50/1.4
Sigma 17-70mm
Sigma 30mm/1.4
Sigma 135-400mm
Once calibrated they all focus perfectly with the K-5 in regular light
but in low light ( <Ev4) ALL OF THEM exhibit the Front Focus problem.
The camera IS the problem. You should know better, i've seen you in these threads for long enough