In my opinion, Dolby vision on OLED with digital content produces the best picture quality you can get and even surpasses movie theatres. It changed the way I watch movies.
There's a way to watch it though. This is what I do on my C series LG OLED:
1. I select cinema mode (not cinema home) with default settings ( OLED brightness at 100, peak brightness at maximum and motion settings at off).
2. On the Apple TV, I let Dolby vision off but select ON to match dynamic range so the Apple TV menus are not too bright and Dolby Vision engages only when Dolby Vision content is launched .
3. Now, the key is to shut the curtains and make the room as dark as possible like a movie theatre. This is what most people don't do.
Now, watch foundation episode 1 or See or Matrix Resurrection, John Wick 2 or 4, Violent Night or Bullet train. You will see what Dolby Vision and HDR really have to offer. The first movie I saw in DV in a dark room is Matrix Resurrection and I was hooked (well, not because of the story, but the colors and the lighting, specially the lighting).
Not only the contrast and colors are more lifelike than film and SDR content, but the light behaves like in the real world. The signs on the streets really light up, backlights really darkens front subjects and fire in the wood really makes it harder to see the trees away, just like real life. The movie Until Dawn also uses DV to enhance the darkness and the highlights to heighten the tension and the atmosphere.
I can't go back to watching non DV or non HDR movies. It would be like going back from Dolby Atmos to a single TV speaker.
If you watch Dolby Vision in a brighter room, just select Cinema Home. The image will be brighter, but color range and contrast will be lower.
Hope it helps. Give it a try.
