I sure do miss the split screen also, though I just use auto focus the vast majority of time. I was used to the split screen on the old ME from 1980 and I liked that a lot. There are times with the K100dSuper now that I think the auto focus just doesn't quite nail it right, and I'd like to be able to adjust further, but without the split screen - can't be sure if I'm improving the focus or not. I thought about adding the Katzeye (sp?), but at $100 or so, I could not justify adding that to a $300 refurb unit. I have also heard that the Katzeye might interfere with both metering and auto focus, though no one has said for sure that occurs. So I'm just using the base auto focus and hoping the focus capabilities on the next unit will be improved. (Forecasting to purchase K5 in October 2012!
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Glenn