actually I got the A850 .. it has a 98% viewfinder as opposed to the A900s 100% , and only shoots a lousy 3.5fps as opposed to the A900s 5fps. They are literally the only differences in the two cameras, and the A850 RRPs for a thousand bucks less !!! Im happy with my decision, and AF works pretty well for me. Im flat out getting decent pictures any time without confusing myself with MF and split focusing screens ..