dr4gon.net

There was an issue with the 7D that was noticed when shooting in burst mode. In certain conditions, a trailing image was seen on subsequent bursts (a ghost image). I guess it hadn't quite cleared out of the buffer. I never saw this, but don't really shoot quick bursts. Anyway, the issue is now fixed with the 1.10 firmware which you can downlaod from Canon here.

• "Corrects a phenomenon that in images captured by continuous shooting, and under certain conditions, barely noticeable traces of the immediately preceding frame may be visible."