If looks like there was something very bright there, probably a sun reflection, and older digital sensors have a problem with that, it's called "blooming" and "

If looks like there was something very bright there, probably a sun reflection, and older digital sensors have a problem with that, it's called "blooming" and "streaking". Basically the charge in one "pixel" is so high, it leaks to the neighboring pixels. Example: http://www.aerith.net/misao/pixy/tutorial/blooming.html http://www.aerith.net/misao/pixy/tutorial/blooming.html