Mediocre HDR peak brightness. It doesn’t get bright enough to truly bright out highlights in HDR, and due to its aggressive ABL, the screen gets less bright as large, bright areas cover the screen.
We measured the HDR peak brightness on the ‘HDR Cinema’ Picture Mode with Color Temperature set to ‘Warm 2’, Peak Brightness set to ‘High’, and OLED Light on ‘Max’. Like with SDR peak brightness, we ran a Pixel Refresher and the screen got a bit brighter after. Before the Pixel Refresher, most scenes were between 358 to 534 cd/m², and we got 117 cd/m² in the 100% sustained window test.
If you want the brightness image possible, set the Picture Mode to ‘Vivid’, Dynamic Contrast to ‘Medium’, OLED Light and Contrast to ‘Max’, and Peak Brightness on ‘High’. We were able to get 706.8 cd/m² with a 10% peak window.