My 50D has a relatively small grey/black blurry spot on one corner in the viewfinder. It does not appear in photos, and I cannot see it on the mirror when I remove the lens, so I am assuming it is between the mirror and the focusing screen. Has anyone else had a similar problem and how was it solved ? I am not currently located in the US, and don't have access to a "trustworthy' canon service site, but would like to fix this as it is very distracting while trying to compose and focus.
Thanks for any suggestions !!