After changing the lens on my 20D on Monday, the mirror got stuck in the upright position and "Err 99" appeared on the LCD
After a day of fiddling around (removing batteries, restting camera, trying on other lenses, etc...), the mirror suddenly went back to its original position. Now it seems to work fine (that 70/200 will now stay on that camera and not move an inch), but what exactly happened ?
From dpreview, it appears that there are a number of issues with the 20d, which prompted Canon to issue a new firmware version (already !). Now the catch, it seems that the new firmware "fried" a number of cameras.
Any information on this would be greatly appreciated.
Fly to live, live to fly - Air France/KLM Flying Blue Platinum, BMI Diamond Club Gold, Emirates Skywards