DisplayHDR 400 vs 600 vs 1000: The Contrast Ratio Math
DisplayHDR 400 requires no local dimming and allows a black level of 0.4 nits. Divide the certified numbers and the guaranteed floor is just 1,000:1 — while True Black 400 reaches 800,000:1.
Tag
#DisplayHDR 2 posts
DisplayHDR 400 vs 600 vs 1000: What Each VESA Tier Actually Requires
DisplayHDR 400 does not require local dimming at all. Run the VESA certification numbers tier by tier and the real dividing line between 400, 600 and 1000 is not peak brightness — it is the black level.