A:Answer PinballMuggle - To change the image size, go to: Menu > Settings > All Settings > Picture > Picture Size Settings. You can choose from Fit to Screen, Zoom and Position, and Picture Size. Under Picture Size, you can change the size of the picture displayed on the TV screen to 16:9 Standard, Custom, or 4:3. Please keep in mind supported picture sizes differ with the input signal and content you’re watching. When connecting an external device like an antenna, your TV will auto-recognize it as its' own source.
~ Samsung Specialist