Originally posted by robbiec I find the Katzeye with Optibrite better (brighter) than the original focussing screen at wider apertures which is where I would normally reside, so for me the Katzeye is best
Even without Optibrite. Trying to manually focus a 35 f2 or a 50mm f1.4 on a flat matte screen is just ridiculous. You run it to one end of the apparent DOF then to the other, and try to pick the middle, and STILL miss a lot. KatzEye fixes that. I don't know why Pentax doesn't offer a split-prism screen when they spend so much effort maintaining such wonderful backwards compatibility.