The TU8000 has decent SDR peak brightness, but it’s a decrease from the Samsung RU7100. Like the RU7100, small highlights in dark scenes are dimmed by the TV’s frame (CE) dimming feature, which can’t be disabled, but it stays consistent across other types of varied content. This TV can’t get bright enough to overcome glare in bright rooms.
We measured the peak brightness after calibration, setting the Picture Mode to ‘Movie’, Gamma to ‘2.2’ and its brightness to ‘Max’.
If you don’t care as much about image accuracy but want to get the brightest possible, then set the Picture Mode to ‘Vivid’, Gamma to ‘2.2’ with the slider set to ‘+3’, and the Advanced Contrast Enchancer to ‘Max’. We were able to get 301 nits using these settings.