A:Answer According to measurements taken by flatpanelshd, HDR brightness sits around 740 nits when 1%-10% of the screen is aiming for full brightness. The brightness drops with larger areas, going to 395 nits at 25% screen coverage, 217 nits at 50%, and 139 nits at 100%.
Rtings reported similar measurements for sustained brightness. For peak brightness, they measured around 800 nits from 2%-10%, 456 nits at 25%, 302 nits at 50%, and 146 nits at 100%. Rtings tested the 55" CX while flatpanelshd tested the 65" model. It's unlikely but possible that the 48" model will perform differently.
Remember to check independent reviews for brightness measurements since most manufacturers exaggerate these numbers.
