Pandora is a world of color. The high bitrate associated with 4K files preserves the deep teals of the ocean and the vibrant oranges of the sunset without "banding" (ugly stripes in color gradients). How to Watch 2160p 3D SBS Content

To understand why this specific format is so sought after, we have to break down the technical jargon:

This refers to the vertical resolution. While standard 3D Blu-rays are capped at 1080p, a 2160p file provides four times the pixel density, ensuring the bioluminescent jungles of Pandora look razor-sharp.