I just got the TV for Christmas and I cant find any settings for this TV. But what I have notice is that getting the latest HDMI Cables for 3D TV's make a huge difference. Make sure your HDMI cables are new and support 3D. I recommend Media Bridge from amazon, they're only $10.00 and work great. Also do not get thick heavy duty cables for this TV, they pull on the connection and can damage HDMI plug very easily. Also give auto dimming a chance, less brightness is easier on the eyes and give you a better picture when showing dark colors.

Cables Info: Mediabridge FLEX Series - High Speed HDMI Cable With Ethernet - (6 Feet) - Category 2 Certified - [Supports ETHERNET, 3D & Audio Return Channel]