I just sent in my 5D III for the light leak fix. I didn't notice any issues caused by the lack of light shielding, but I knew it would forever bother me until I got it fixed.
I had noticed that my 5D III tends to underexpose some pictures more than my previous camera (550d), but I can't say that was because of this advisory condition.
Has anyone else sent theirs in? Anyone gotten theirs BACK from being fixed?
I'm counting down the days until mine comes back. 7 business days sounds like FOREVER!
For reference - the advisory: