I do not want to dissapoint you, but have you noticed that these orbs appear only when you are photographing with the flash? That is simply some dust particles near the camera, that are reflecting some of the flash light. I had numerous of these orbs. Try a test and go to a dusty place, swirl around some dust and then try to make a photo with flash, you definatelly will see many orbs, or you can take a picture of someone with a flash, when it is snowing, there will be the same effect. I do not say, that all of the orbs are only dust particles, but this makes you think