I have a K1..

Started Aug 19, 2019 | Questions thread
DougOB
DougOB Senior Member • Posts: 1,784
Re: I have a K1..
1

TomWret wrote:

What do you use to shoot at to tell if your Lens' are front focusing and what is the procedure to correct?

Thanks, Tom W

There are a lot of test targets out there that you can get.  Some you can buy but I download a free one somewhere.  They are easy to find online.

Typically to shoot at a 45deg angle at the target at the centre point then examine the picture to see how much it is out.  Usually I start with three shots with the adjustment set at -5, 0, +5 and then iterate from there.  On a tripod, center focus point, shoot wide or close to wide open, ...

If they are all front focusing then it is possible you only need a single global adjustment for all your lenses as opposed to separate values for each lens.

Or send the K-1 in for adjustment

Doug

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Pentax K-01 Pentax K-3 Pentax Q-S1 Pentax K-70 Pentax KP +32 more
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