Originally posted by apentacitis Yeah ok thats what I thought you meant. I definitely tried to "work" the area, still remained the same. I don't think it has changed any since I started so I am starting to think it is either a defect, stain, or stubborn oil/pollen.
For what it's worth I have a Canon Rebel XTi which has pretty much a permanent spot like that too. I have "scrubbed" it with a cleaning swab and it has remained no matter what I've done, and since I really don't care about the camera much at this point, it got a really hard cleaning not a nice gentle one you'd normally do.
Good luck. Might be best just to leave it and edit it out if it crops up in anything visible.