Originally posted by ScooterMaxi Jim As far as AF is concerned, I agree with others that it depends on conditions and lens used. Generally, with lenses faster than f/2.8 the K-01 is considerably quicker and more accurate. With slow zooms, the K20D is a bit quicker and does not have the miss and hunt problem. However, I also find that both bodies are inadequate for critical shooting of moving objects. (Luckily, I also have some Canon equipment for that.) The K-01 is superior in very low light situations with fast lenses using focus peaking in MF; and good for macro for the same reasons. K-01 will be better than K5 for pTTL, and video. However, if you don't like using the screen for shooting, or you plan to ditch the K20D and KR - which is going to be far better for action shooting - I think going with the K-01 as your only body is the wrong move. The K5 is the best single option unless you do a lot of pTTL flash, then the K30 is your best option. Pricing and size differences just aren't that great.
Well I had a K20D, long ago. I use K-01 with my fast lenses (FA31mm, DA*55mm and FA*85mm) and that works very well, both in speed and accurate. But that is for portraits and not movind objects, for wich I use my K-01. As a stand alone camera you would probably miss the futures that are in dslr like K-5/K-30.
I find it more easy then with K-5 to use these lenses with a wide aperture.
On the one hand I did have a lot of misses in the beginning, but I made 8000 images with it and that feels comfortable. I learnd when it works and when not.