Originally posted by xfraser Now that you mention it, I've noticed that too. My long lens quite often starts out focusing the "wrong" way, then goes back and focuses the "right" way. Sometimes it gets really confused and I have no idea what it's doing!
I had the same trouble on taking delivery of the 100mm macro.
Set up the *istD (yes the old one not, Dl Ds)on tripod for flower shots to do some tests.
switch on....Yikes! focus oscillating in and out like a yo-yo !(sf selected)so it wasn't me shaking!..nor was the flower!
I have used MF for this lens ever since.
Then noticed a reluctance to focus on "all" of my AF lenses in outdoor lowish light.....not really dark conditions...overcast I would call it
Finally over time (about a year) the camera began to refuse to focus at all......then would not turn off!!!
remove batteries to reset.
Sent camera to local agrent (CR Kennedy Australia)who passed it on To PETAX japan.
That was on 8th August.......not a B....y word since of a return date!!
My brand loyalty severly tested. Have been a Pentax man since 1960 (Now a very old fossil) an I still have a number of them inc the famous Spotmatic.
The K10D looks good on paper..........but I have had about enough!