Summary: Picture looked good unless the camera was panning across a large flat area of color (i.e., the sky or walls in a room), which is when you could see a vertical and horizontal shadow of grid lines. My guess, which is very uneducated, is that it is due to the t.v.'s backlighting system. I was expecting "flawless", "pefect" and that manufacture's claim was not met by this product. So I had to return it. I'm going to give Samsung a try, with a little bigger hit in the wallet.