Can't remember but have you tried turning brightness down to 15 or so? I've noticed that even being slightly off angle you will see more blooming than looking at the TV straight on. I sit slightly off angle and from where I sit the black bars on movies are more gray than black ans show blooming when something bright is near the letterbox borders. When I look at the TV straight on the black bars are much darker and the blooming is not as bad. I knew when I read reviews for this tv that the viewing angle was limited but I didn't think it would hurt dark areas that much. I don't notice this in the actual picture though so I am happy with the sony, just have to get used to its own peculiar ways.
Sony 55X900E, Sony STR-DE635, Sony PS3, Samsung UBD-M7500