Originally posted by mel Lance -
Can you post from exactly where you purchased the shims and do you have an illustration or photo of where these shims are inside the camera? It seems my Katz Eye screen does not agree with my AF beep and I'd like to fix that, but I want to know exactly what I'm doing and have the right materials first.
Thanks.
Mel, When I went through this with my K7, Rackel Katz was kind enough to send me the K7 part numbers:
77240.M02200A - 0.15mm
77240.M02200B - 0.20mm
77240.M02200C - 0.25mm
77240.M02200D - 0.30mm
77240.M02200E - 0.35mm
77240.M02200F - 0.40mm
77240.M02200G - 0.45mm
77240.M02200H - 0.50mm
77240.M02200I - 0.55mm
You will need to order them from Pentax USA. They are quite cheap, only a few dollars each.
If you look inside your camera with the screen out, you will see a small release just to the right of the latch for the focusing screen.
That latch is holding the shim in place.
My camera had the .040 shim in it, and I found the .025 shim to be the best one, though I suspect the .030 one might be better, except it came to me bent, and so is unusable.
My manual focus is much better than it was.
The OP is incorrect about the screen orientation. The image is focused on the bottom of the screen, not the top, and the shim is put in place to correct for slight differences in screen thickness that will affect where the focus plane of the screen is located.
The focus plane of the screen is
not on the prism side as the OP indicated.