🎬 Color Science & ACES Architecture

HDR Video Color Grading: Perceptual Quantizer (PQ) vs Hybrid Log-Gamma (HLG)

👤 Author: Master Colorist & Systems Architect📅 Technical Review: September 2026⚡ ACES 1.3 & WebCodecs Verified

High Dynamic Range (HDR) delivers peak luminance exceeding 1,000 nits and expanded color gamuts (Rec.2020). We analyze the mathematical differences between SMPTE ST 2084 PQ (scene-referred absolute luminance mapping up to 10,000 nits) and Hybrid Log-Gamma (HLG).

Robert Baindourov

Written by Robert Baindourov & Moviemodifier Post-Production Desk

Senior video transcoding systems architect and colorist specializing in ACES color pipelines, Dolby Atmos spatial audio mastering, and high-performance WebCodecs GPU acceleration.