The company first described the problem in a service advisory published a little over a week ago. The problem is said to manifest itself as subtle ghosting of the previously captured image in the subsequent frame of a continuous-mode burst. The ghosting is apparently more noticeable in images with sub-optimal exposure, where levels have been adjusted after capture.

At the time Canon USA published the advisory, the company stated that a firmware fix was planned to address the problem. The release of Canon EOS 7D firmware v1.1.0 brings this promise to fruition, with Canon's change log for the firmware listing only one change:

"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.

This phenomenon is not noticeable in an image with optimal exposure. The phenomenon may become more noticeable if a retouching process such as level compensation is applied to emphasize the image"

For more details, visit the firmware download page.