I am not an expert in cameras for a sophisticated review. I just report two problems with my A640 after a couple years of very light use. The camera is now dead -- not responding to on/off after my recent battery change. The Wolf Camera service wants 130 flat rate for fixing the problem, for I am out of warranty. On several occasions my photos have been spoiled by an easily movable round selector on the top of the camera (portrait, far objects, etc).