Canon has posted a new firmware 1.1.2 update for the 5D Mark III which addresses several problems and issues. You can download it here. Canon has also stopped shipments of the new camera until they can fix an exposure problem. It seems that if you are shooting in extremely low light conditions and use the top LCD illumination feature, which most people tend to do in that situation, this will throw off your exposure, probably in the direction of under-exposure. Canon has also issued a product advisory to 5D Mark III owners about this glitch and starting in mid-May will inspect owner's cameras free of charge to see if this is happening to their cameras. Whether this means they will also repair or adjust the cameras for free is unclear at this time. Most new cameras have a few glitches to work out after introductions, but I have the feeling that this won't help sell the 5D Mark III.
