A:Answer JCastell - Both the Q70A & Q80A include features such as Adaptive Picture, which optimizes the TV's picture effortlessly with a lighting system that automatically senses, reacts, and adjusts to the brightness of the space you're in, and Supreme UHD Dimming, which precisely scans an incredible amount of zones across the entire image and adjusts brightness to deliver deeper darks and brighter whites. When stepping up to the Q80A, you will gain Direct Full Array backlighting, which is designed to bring scenes to life with even more precise contrast controlled by in-screen lighting that delivers deep blacks and pure whites with minimal halo or blooming. ^Gina