Level 1 (5 points)

Picture problem with Tenzing.

My TV is a Sony Bravia 8 II 55” OLED. I have the AppleTV box purchased back in July 2023. Firmware is up to date.

Up to last night every programme has been perfect. But watching Tenzing last night there was significant and obtrusive posterisation most noticeable on faces - especially Tenzing’s.

DV Bright was in use but changing to Low made no difference. This appears to be an Apple problem with this particular film as other Apple output is fine.

Can anyone confirm this problem please?

Posted on Oct 19, 2026 1:49 AM

2 replies

WheelieNick

Level 9 (74,110 points)

Oct 23, 2026 2:09 PM in response to Ray_Proudfoot

Hi there

Please try this

Restart the Sony TV: Hold down the power button on your Sony remote and select Restart (power cycling clears temporary image processing glitches).
Power Cycle the Chain: Unplug both the Sony Bravia 8 II and the Apple TV 4K from the wall outlet for 60 seconds to reset the HDMI handshake.
Adjust Apple TV Video Format:
- Go to Apple TV Settings > Video and Audio > Format.
- Try changing from Dolby Vision to 4K SDR with Match Content enabled (Match Range and Match Frame Rate set to On). This allows the TV to handle native HDR/Dolby Vision triggers directly from the stream rather than forcing the Apple TV box to upscale or remap every signal.
Check Sony Picture Calibrations:
- In your Sony Quick Settings, check if Gradation Smooth (under Picture > Advanced > Clarity) is turned on. Raising Gradation Smooth helps iron out posterization and blocky color gradients on OLED panels.

Ray_Proudfoot Author

Level 1 (5 points)

Oct 23, 2026 2:15 PM in response to WheelieNick

Thanks Nick. I’ve resolved the problem. I used the Apple app on the Sony to check the picture. It was much improved.

Today I had the TV calibrated and now the picture is perfect. I had several settings set incorrectly for Dolby Vision. That was the issue.

Originally posted at discussions.apple.com/thread/256378809