Originally posted by noelpolar My K5II back focuses, generally needing a +10 correction on all the lenses I have.
The fact that many Pentax users have a general BF or FF issue is not point of this discussion thread. The point here is that only the AF lenses have this issue while MF lenses do not. Please only comment your experience if you can relate to that effect, or this thread will get lost in off-topic talk. Thanks.
Originally posted by Wild Mark Yes I have now recently realised this too with my K5. I recently got a 31mm and immediately noticed the problem (I initially thought I had a bad copy - eeek). So I tested with my 80-200 f2.8 and again an AF problem. Hmmm. Manual focusing is fine.
I don't see the relationship to my particular issue here. Have you tested MF against AF lenses?
To rephrase this topic's main question: Is anyone else experiencing the effect that only their AF lenses need BF/FF adjustment while their MF lenses are spot-on?
And
does someone know whether service technicians can make firmware-based adjustments to the focusing that are not accessible via the DEBUG menu?
I ask because I had my K-5 serviced for focusing issues and wonder if they managed to change the AF focusing in a way that doesn't affect the MF focusing. Makes little sense to me since both use the same technology, but you never know what the firmware's hidden features are...