Focus adustment on a K10D

I'm glad someone found it useful anyway .. it has made a huge difference to my K10D. It really is like having a new camera (and mine also seems to be better on all lenses including zooms)

80% crop taken yesterday with F* 300mm and 1.7x teleconverter.

That focus is spot on in your images Mike

I've followed this thread with interest because I sometimes feel I'm not getting optimum sharpness with the DA*50-135mm lens on a K10D. Even allowing for my reluctance to use a tripod I'm sure there is scope for 'could do better.'
So what is this hack MikeP is on about and how do I get into it?
david

Try here David link

I did this not too long ago when I got my Sigma 30mm f1.4. At 1.4 the images just looked awful so I did a focus test on a ruler, and sure enough I think I set it to 110 as well. All my lenses look so much better now for this.

David,

If you already have the 'hack', then the instructions at the link Barrie provided are spot on - that's how it worked for me. You only need to do that once, and the rest of it is in your K10, using the standard English language menu.

Once installed, I drew up a quick grid on paper for each lens, running from -120 um through zero to +120 um, and recorded the image number next to each setting (using a tripod, AF-S, Av & max aperture, 2 second shutter delay, SR OFF).

Once you've got your 25-odd shots per lens off, you can view them on the PC using the grid you contructed on paper - you'll see the focus differences soon enough.

Note that this only affects AF, not manual focus - the latter is the domain of the shims that Lance B has comprehensively described elsewhere on PU

Good luck.

Thanks - I have been wondering about this for a while.

Cheers,

/Ian

I lined up 8 different clothes pegs on the line outside, focused (hand held) on the middle one and adjusted until it was spot on

I used three matchboxes sitting on brick paving - worked a treat! The grid was only for my notes, so I knew which image used which setting - apologies if that was not clear...

I suppose I should also add it was 7 pegs .. not 8
Bit difficult focusing on the middle one otherwise

Bit of a lurker here, but just wanted to say "thanks" to the OP and others - I'd read of focus adjustment before but not really understood and had been wary of trying it.

What an improvement.

Thanks again.

The more i read the more Im am going to try this with my Bigma........

Paul

Interesting thread Mike.I'd like to try the hack,but I have know idea how to go about it.Could you explain please.
Jeff

Try Barries link a few posts back Jeff.