Originally posted by falconeye Moreover, without a more controlled test it really isn't possible to draw any conclusions.
Yes, I agree. My only conclusion is that in real life images I've yet to see the issue with this K-5, so I'm a happy camper
Originally posted by falconeye Nevertheless, if I find a practical way to do a controlled test delivering numbers which can be compared, I'll ask you to participate
I'm alone on this and next week, so I'll probably have some time for a quick controlled test. Until then, I just made two "quick and dirty" shots,
first one with a 20W tungsten desk lamp's light bounced off the wall (LV according to exif 2.6),
second one only lit by a small candle (LV according to exif -0.3). First one seems to be spot on to me, second one is front focused a bit, but at that low light I don't expect perfect AF (in fact AF hunted a lot and couldn't lock focus for a few tries). Target was 96cm away for sensor plane (32x focal length), lens is Sigma 30 f/1.4,
here is the setup, exif full intact in the two shots. This is probably a flawed test, but then my real life shooting is flawed in the same way
As someone mentioned, some settings might also influence whether the issue happens or not? I know that the settings on this K-5 are not exactly the same as on my previous K-5 (which exhibited the issue under the same conditions).
Anyways, let's wait what Pentax comes up with. We can speculate, do (flawed, uncontrolled) test and argue as much as we can, it probably doesn't/won't have much influence on Pentax's answer to this interesting issue