Hey, I love this TV too. I think Hisense is doing a lot of things right and going to be big in the market. Anyway, my understanding is that Dolby Vision is a video format that simply allows for better picture quality. If something is broadcast in Dolby Vision, this TV can interpret that and it looks great - exactly like the content producer wants it to look. Other TVs that don't have it will just display generic HDR (High Dynamic Range) color which can still look really good. I don't believe there are settings to turn it on or off or adjust it (because the content producer doesn't want you to mess with it), its just there if the content was produced and broadcast with it. Pardon me if I'm behind your research and you find otherwise. Enjoy.