Front focus problem

Hi all,

After having a Katzeye screen installed for over a year, my K200D has suddenly developed a front focus problem when manually focusing using split prism. The screen was previously perfect without installing any shims. I haven't made any adjustments to the camera or screen to cause this and I've checked that the screen is properly locked in place.

The front focus is around 10mm at minimum focus distance with a 50mm lens and due to DoF disappears at f/4, but is visible with apertures larger than that. There is also a front focus at infinity (at any aperture), where the AF beep/light seems accurate while the split prism indicates that the subject is slightly out of focus.

Can anyone recommend a place to get a selection of shims for the K200D and a screen replacement tool, as I cannot find my original screen & tool from Katzeye. Does anyone have these items & willing to sell? Is it worth contacting Pentax UK or SRS, as the K200D is listed as not having a replaceable screen?

Many thanks for any help

If the screen is the same as the K10D/K20D then I have a LL-80 LINK

Doesn't look like it is the same so ignore my post.

I think the K200D screen is a bit smaller than that of the higher grade cameras, which is why neither the screens nor the shims from them will work

Somewhat later than planned, I've finally gotten around to changing the shim. I ordered a full set from Johnson's Photopia (who were excellent to deal with) and had to wait around six weeks for them to receive stock of a couple of the shims before they sent them. The full set cost around 35 quid with shipping.

I've swapped the original, which I think is the 0.33mm shim, for the 0.23mm, and that has fixed the problem. I can now focus my 50mm f/1.4 & 84mm f/2 lenses perfectly, even wide open. The swap was easier to do than I expected, and a lot easier than when I originally installed the Katzeye screen.

Now that that's fixed, I can start to think again about getting an 85mm f/1.4...

Dont procrastinate, get that lens