I'm not new to photography, but I am relatively new to digital, for the past year I have a used a canon P&S and gotten some remarkable photos. I was pleased that most could be zoomed in even larger in photoshopp and cropped for a nice crisp clear closeup. So ---I finallly get the camera I've dreamed of for the past two years - Sony A100 and I go out to shoot some birds and scenic shots using a 70-210mm Minolta lens from my old film camera I got what I thought were nice clsoe shots. I'm shooting in JPEG fine which according to the manual is still recording at 10.2mp and I put the photos on the computer. In photoshop I zoom in on a bird expecting exceptional results and it looks like it was shot with a 5mp or less camera! I had the camera shake button on - I'm working in program mode with a ISO of 200, avearge shutter speed 125 -250 and the picture looks clear untill I zoom in using photo shop....why? I'm reallly getting frustrated!