Originally posted by koguma Do you know where I can get professional calibration? I purchased the shim set from Pentax and apparently, my focusing screen is some weird odd number. The closest shim is the 'D' shim, but it's still 2-3mm off. It's been frustrating me almost to the point of just forgetting all about using a split screen. The ebay seller I got it from is also a retard when it comes to support. So I'm thinking of getting a second one from another vendor. Can anyone recommend on that worked well for them? Preferably for a K2000?
Assuming you meant 2 to 3mm in focusing distance, the first thing I'd establish is whether or not its on the front or back focusing side. ie. if the focus is prior to the focus plan(front focusing), then you want to add to your shim. You can calibrate a screen with nothing more than a ruler. Though I have found that after nailing close focusing, its quite common to go outside and find the screen being slightly on the infinity end of things. In which case, it would require a little more fine tuning(infinity adjustements require very little in way of change).
One very cost effective way to adjust a screen in the advent that you don't have extra shims is to use 3M tabbing tape:
It's cheap, very thin and reversible(should you add to much) as you can remove it with nail polish remover or some other product like GooGone. Though overall it makes it possible to add very thin layers onto the shim face(within reason
) making calibration easy and accurate. Though the ideal situation is(of course), to order the appropriate shims from Pentax. Which are relatively cheap(3USD each) and you only need a few sizes to get the job done. I had several dozen shims laying around here, but none for your camera unfortunately.