I just got my lens today from BH and it appears there's a very small, 1mm or so, scratch in the lens about 2 inches or so in from the outer lens. I've taken several pictures and can't see any defect in the pictures, but I'm just concerned after paying $1700 for an L lens that it appears less than perfect.
Has anyone else had this experience? Shouldn't I return it if it has a scratch-looking defect?

