When watching 3D content, especially when the screen is displaying a bright mostly uniform image (like when watching the snowboard movie "Art of Flight" with its white snow fields), I notice the left half of the screen is noticeably darker than the right half of the screen with the two halves divided exactly in the middle by a hard transition. This shows up whether or not I'm wearing the supplied 3D glasses and does not show up at all with 2D content. Is this an artifact of how 3D works on this TV or is mine defective? I attached an image of my TV showing 3D content with a bright uniform image so you can see what I'm talking about. I tried researching this issue myself but came up blank, so I thought I'd try the experts on here. Thanks for your help.