I'm not positive on the contrast ratios, but I do remember that it essentially is not a true 1080p, it has a unique video acceleration setup that, for lack of better terms, cheats to get the true 1080p image. This was the other reason I returned the tv. I ended up getting the vizio 55" e - series. After doing some more research, I found that it has one of the top 3 picture qualities out of a non-plasma unit for 2014. Also price was amazing.