Hi I am a new member. My query is on my Samsung 46 inch LED 3D TV. I need some clarity on the settings. I understand the DEPTH setting , however, the optimisation ( -1 to 0 then +1) I do not understand. Also there is a setting os -5 to +5 on the picture? Can anyone explain this in simple terms. The manual does not do justice to this. Regards Vijay