Notes on a split image focusing screen for the K10D
A couple of quick observations – this was a cheap split image screen off ebay.
- Installation was extremely easy; the package didn’t come with any instructions but I was able to follow those on the Katz-Eye web site.
- The screen goes matt side upward, i.e. facing toward the mirror/prism. It wasn’t clear to me which side was the matt one until I held it so I could see the reflection of the ceiling light in the shiny side.
- I got a couple of specks of dust on the screen while changing it, but I was easily able to clean them off with a bit of compressed air.
- The split image works fine up to f/4, it blacks out at some eye positions at f/5.6 and is completely dark by f/8
- Focus seems extremely accurate; the microprism collar is most useful when there’s a fair amount of texture on the object you’re focusing on, and the split image in other cases.