i hope someone can help with a issue with my picture at the moment i feel i am not getting the full potential out of this tv i have it on standard setting with contrast brightness colour left on out of the box settings but the picture seems to dull for my liking but when i increase the contrast etc to a level satisfactory for me i am getting a halo around the whites and alot of image retention after about 3 minuyes altough this does dissapear so basically i cant have the picture to my liking does anyone know any way or settings where i can improve on the picture so its not as dull and to also remedy the issues i am having with the contrast i.e halo effect etc :?