I agree with @kkoether, it's a great camera, I used it for landscapes for a couple of years before jumping into a K-5, now it is my backup body. Some of my favourite landscapes were shot with the k200, and for landscape I'm always shooting at the lowest ISO possible, so high ISO perfomance is not an issue (but should you need it, 800 is still quite useable). Manual focusing with older lenses is great (as with all Pentax dslr), in landscape photography I do a lot of manual focusing.
This one was shot with the k200.