I have no idea what this is. I had sent my camera back a month or so ago to get it cleaned (practically brand new) because I had a very large peice of dust that wouldn't be blown off. I get it back and am loving live, taking tons of shots and learning. Then Im taking pictures of my brothers new hair and when I view them, I notice something. zoom and and Im like, WTF. This has just started since the 30th of july. Pictures prior to that have been fine (I save just about every shot I take). Now this little green mark doesn't show up when I shoot at close apertures like f/32, but on large apertures it is very apparent. Is there something wrong with my sensor? I tried blowing this out but it doesn't seem to be dust. I really dont want to send it back for another 4 weeks Help me please. Said picture (this is a crop so that I wouldn't have to compress the image because making the full image 800x600 makes the spot unnoticable) closer view of the spot, this is the 800x600 crop of the picture Again a very tight close up on said spot BTW, if this is in the wrong forum mods can you please move it. I dont know if this should be in equipment or what. Thanks.