Hi - The range of Quantum HDR claims luminance based on internal testing standards. For example, the Q80A TV features Quantum HDR 12X which provides immersive color with deep detail that makes every detail pop. Stepping up to the QN85A, you will gain Quantum HDR 24X which further enhances what you watch with vivid color and deep contrast that bring crisp details to light. Should you have further questions, please reach out to Samsung Support at: 1-800-SAMSUNG (ask for TVs), available 8AM - 12AM EST, 7 days a week, or Chat with us on Samsung.com: https://www.samsung.com/us/support/contact/ ^Gina