[Imampaictjg]

i am a photographer and this looks like a 'lens flare'. the different colors 'purple' and 'green' are form the different lens elements having different colored 'coatings'.

it looks like you used a pentax optio e10 for this image and this p&s has a zoom lens quivalent of 34-102mm so this means there are many lens elements in there moving as you zoom in and out.

also most of your pictures were taken at f/5.6 which is probably in the middle range of the aperture for your camera. this means that the aperture opening is large enough for light to internallt reflect inside the lens to create a 'flare'. i am sure that the 'orbs' would have been minimized with the use of a smaller aperture like a f/11 or f/16 if not f/22 or f/32.

the difference in the position of the 'color orbs' is from the angle that the direct sunlight comes in to the lens and reflects internally. this would vary greatly because of the small lens with multiple moving elements. the relative position of the sun (and factor in the tilt of the camera as well) and the lens elements in each of the photo looks like its between 8 to 15 degrees. the one that has an absence of 'orbs' is directly straight looking into the sun hence no visible 'orbs'. in the other pictures, the sun is either to the left or right of the center of the picture so the intensity and shape of the 'orbs' differ. they are just lens flares really.