Hi. I've had my Canon A720 IS for almost two years, and for about the past year I've been noticing a small, blurred, light black spot in most of my photos. Most of the time it's not noticeable, but when taking pictures of something that has a very uniform, light colour (like the sky) it can really stand out. Here's a video that really shows it well (the blurred spot is down and right from center): (if you're wondering how my A720 can do optical zoom while taking video, it's because I have the CHDK hack). I know it's not dirt on the lens because I've cleaned the lens several times, and I can't see anything on it. During Christmas I was playing around with manual focus on my Christmas tree, to get a blurred shot of the Christmas lights, and I ended up getting this picture (note the weird defect down and right from center): http://www.thephotoforum.com/photos/data/500/medium/IMG_6854_full.jpg . Here's a close-up of the defect: http://www.thephotoforum.com/photos/data/500/medium/IMG_6854.JPG . So, considering that the defect shows up really well when focusing as close as I can (2cm), I'm guessing my camera has dirt on the sensor or somewhere inside the lens. Would this make sense? Of course the lens is non-removable cause it's a point-and-shoot, so I'm not sure how dirt got in there. If it's not dirt, what else could it be? I also had this problem with my parents' camera, a Canon A80.