Fine Focusing

I've just finished checking all of my AF lenses on my K-r using one or more of the focusing test charts available on the web and they all seem to be alright and not to require any fine adjustment.

Do I:-

a) need to go and get my eyes tested;
b) count myself lucky that my lenses are all correctly calibrated;
c) not understand how to undertake the tests properly;
d) need to stop worrying about testing AF accuracy, and just trust my judgement of the images I take with them, until repeated "out of focus" results tells me otherwise.

I worry as there have just been so many posts on various websites about AF accuracy that I worry that I must be missing something. Also, can anyone tell me, does AF accuracy vary over time due to wear and tear, or with temperature (i.e. perhaps time of year)?

Phil

Phil, are your pictures sharp? If so, don't worry. If not, look into it further.

All my lenses are fine as well and I spend my time shooting images, not checking focus charts!

My thread about focus adjustments on the K10D was sparked because I'm seeing what appears to be focus issues in my pictures, and I want to rule out the possiblity that the camera is doing it wrong so that I'll know it's my fault.

If you're not getting focus problems in your images, don't worry about it.

What they said!
I know I have a problem, but then, my camera was dropped, hard. If you can't see a problem, then relax, enjoy!

If you are using the newest Pentax cameras K-5ii/s then the AF is significantly improved and whereas I used to AF adjust pretty much all my lenses on my K-7, none have required it on my K-5iis.

Just a question really - is it true that on Pentax our AF performance is more camera body dependant due to the 'screw drive' system, more then other brands which would be more dependent on the lens mechanics?

I'm not quite sure in what sense you mean, but all components need to be within tolerance to ensure best results. So no point having accurate engineering in, say, the screw focus system and having a sloppily made lens that doesn't stop at the right point but overshoots.