A couple months ago while shooting the Formula D finals in Irwindale, Ca my Canon 1d Mark IIn started to make some strange noises each time I fired the shutter. I shot a couple images and looked at the screen and noticed this diagonal black bar going across the frame. all I could think of was great not again, see this isn’t the first time the shutter has failed on this camera. It has happened 2 other times and both well under the 250k that Canon says they say they should last. Each time this has been repaired, Canon has not charged for completely replacing the shutter…I guess this is a known issue with these cameras.