Originally posted by TaiChiTom Doglover,
I have not found the metering issues much of a problem with my K-5lls and the Katzeye. A little EV comp and problem solved. What is it about the Canon screen you like? I believe I have read some have issues with scrims for the screen or cutting the screen to proper size. Like Rich, I felt rather klutzy putting the KatzEye in. Don't think I want to go through putting it in and out messing with different scrims.
Tom
The s-screen allows you to view, without a split-screen, in-focus areas at very large apertures. At least f/1.4, possibly 1.2. Simply put, it does what a split-screen purports to do, but better and without the annoying (to me, anyway) split-prism collar in the middle of your VF. I've had a Katzeye before, trust me the s-type is better.
The only drawback (and only to a select few) is that the s-type can cause a slight darkening of the VF with slower lenses. (Not when using fast lenses at slower apertures, a common misconception. All modern lenses allow focusing at wide-open apertures.) I've never found it to be a problem at all.
S-types bought from focusingscreens.com come pre-cut to fit whatever body you buy them for. They also come with shims, which are required to fine-tune a screen for your individual body. I honestly don't remember if I had to use a different shim when I installed the Katzeye, but as a rule, you generally have to re-shim
any aftermarket screen. It's not hard, can be tedious, but is totally worth it to me.
If you didn't have to re-shim your Katzeye, it is either 1) the exact same thickness as the OEM screen, or 2) misaligned, giving you a slightly different focus plane through the VF from what shows up in the final image. If the Katzeye is the same thickness then I will concede that as an advantage, but still not worth picking it to me. I will have an s-screen in every body I use until we have in-VF focus peaking, and frankly, I'm not too sure that would work any better.