I heard that someone was able to put the ZX-M's focusing screen (which has split-image and microprism) in an AF ZX-series body (who's focusing screen does not have split-image or microprism), and it worked fine and didn't affect metering.
I'd like to do the same with my ZX-L. Yes, I understand that I'll lose the AF and spot meter marks, but that's a small price to pay to get a split-image. So, I ordered the ZX-M's focusing screen from Pentax (it was only $3.36 + $5.00 shipping). But, I've never taken a camera apart before. Should I go in from the top, starting by unscrewing the top cover, or from the front, starting by unscrewing the part that the lens mount is attached to? Is there anything I should watch out for to avoid damaging the ZX-L, or is common sense an adequate guide? Am I unwise to try this myself? Should I not even consider it and instead take it into a shop and pay them to do it? I'd prefer to save the money if possible. Is there any information on the web or elsewhere that can help me in this project? Thanks, Greg
