It's time to upgrade my trusty 10d anyway, but hopefully I can solve this problem so the camera is still usable as a backup.
I shoot almost exclusively manual, but a few weeks ago, the light meter kept trying to tell me that I was underexposing by about 2 steps with settings I know should be spot on. Switching the camera to av or tv confirmed this, as every shot was WAY overexposed. I have reset the camera to default a few times now still have the problem.
Believe me - I have checked the exposure compensation and I know that that is not the problem. The camera overexposes with the exposure compensation set to 0. I have actually made it kind of work for me by setting the compensation to underexpose by 2 stops.
Also, it doesn't seem to consistantly overexpose by 2 stops, but that seems to be the average.
Yes, I have tested it on four different lenses, with the same effect. This camera has seen a lot of use and this is the first time I've run into any problem with it.
Did the problem just start out of the blue? As in yesterday it was fine, this morning it was toast.
Considering the price of repairs and the price of used 30D's on the "Buy & Sell" forum, it may be an excellent "excuse" for an upgrade; maybe even go for a 1D.