I think I may have messed up my sensor while cleaning it. By "messed up", I mean put a dozen or so fine scratches on the filter that sits atop the actual CCD sensor. I was reading a forum on how people clean their sensor, and the general consensus was that you don't need liquid unless something weird is stuck to it, and the "glass" filter on top was quite hard and ultra-fragile and touch sensitive like most people believe it is. People just recommended taking a soft cloth and wiping it back and forth over the sensor. If you can't put your finger inside, then cover a small, hard object with the cloth, and wipe the sensor with that. Make sure the object doesn't have any sharp edges. This is where I f***ed up. I think I went a bit "medieval" and scratched it up. I used a soft, thin cloth that I used to wipe my eyeglasses with. However, I probably chose the wrong item to help me. The section of the item I used wasn't sharp. It was rounded and quite dull. However, the edges were sharp. When I wiped the sensor, I think the rounded edge was sometimes pressed against the sensor at a slight angle (rather than completely flush/flat with the sensor), which means the sensor was sometimes wiped with the edge of this object. I was hoping these scratches wouldn't be visible unless you were shooting at f/16 and other small apertures (ie: when you shoot macro). However, I was wrong. I can see them faintly at f/5.6, and they only really start to be "invisible" at f/4 and below. That is messed up. Is there anything I can do to take away the scratches?