A:Answer I don’t know if you have found your answer yet, but a popular review website has reported measurements, in nits (cd/m²), for the peak brightness. I’ve copied and pasted the results for HDR peak brightness below, but you can easily Google the entire review with all specs. The peak brightness, especially for HDR, isn’t very high. The TV does have a nice, crisp picture, a wide color gamut and a high contrast ratio, all of which are certainly noticeable, but it doesn’t really offer the brightness required to take advantage of HDR capabilities. This was one of the deciding factors for me when I chose to return mine. I generally like the Hisense products I have, but I was looking for something a little bit more than this one offered, even though I think this TV offers good value for the money overall. But, if HDR content is an important part of your viewing, this TV might not be for you.
HDR Real Scene Peak Brightness : 282 cd/m²
HDR Peak 2% Window : 255 cd/m²
HDR Peak 10% Window : 403 cd/m²
HDR Peak 25% Window : 275 cd/m²
HDR Peak 50% Window: : 272 cd/m²
HDR Peak 100% Window : 281 cd/m²
HDR Sustained 2% Window : 243 cd/m²
HDR Sustained 10% Window : 244 cd/m²
HDR Sustained 25% Window : 263 cd/m²
HDR Sustained 50% Window : 272 cd/m²
HDR Sustained 100% Window : 268 cd/m²