Originally posted by Franky2step Thanks for that! Another problem is the adjustment range is insufficient to get great focus.
Send in your camera AND all the lenses to have them 'calibrated' by an official Pentax repair shop, as your gear is brand new, they have to (and will) do this for free. That's what I did.
On the other hand, a Spider LensCal is a good tool for AF adjustment.
Don't forget that lenses/camera tend to evolve, particularly the screw driven lenses, not the SDM driven ones,
yet. What is adjusted today might no more be that just tomorrow...That's why I have the Spider and check my gear every month, there is always a (screw driven) lens that needs to be readjusted!
What the service center did was something like a 'basic adjust to factory specs', I guess...
Anny focussing system is more or less sensitive to get 'unadjusted'. At the time, my Leica's RF focussing needed to be checked and adjusted each two years, as well as all my Pentax LX (the mirror, you know). Still, my Hasselblad's focussing (the mirror too) each five years, if not sooner... Not to mention the parallelism of my Linhof view camera, which is build like a tank.
BTW, imagine what can happen with a manual focussing lens on a digital body...
If gear is used a lot, it's prone to wear, checking the adjustments regularly is the way to go.
Good luck with you new Pentax stuff, once under control, it will be damn good and fun to work with!