Hi
new to the forum, had a Samsung GX-10 for 2-3 years & just upgraded to a Pentax K-5
I thought I'd share my split focus screen experience as it might prove valuable to others
I'd ordered a split screen for my GX-10 from Hong Kong, but in the 5 weeks or so it took to get here I'd convinced myself to part with the cash for the K-5. The screen I'd ordered was actually for a K10d in the hope that it would fit the GX-10.
In typical fashion the screen arrived the day after I'd traded my GX-10 in for a shiny new K-5
I took a look at both screens & they appeared identical but when I fitted the screen in the K-5 the MF point was a few centimetres in front of the AF point. After a bit of trolling round this (fabulous) site I discovered that the locating tabs were on different sides of the screen in the k10d & K-5. I simply cut the tab off, turned the screen over & refitted - hey presto perfect manual focus!
So anyone upgrading from a K10d to a K-5 or K-7 can re-use their split focus screens
Hope this helps