A more engaging movie experience depends on sitting closer to the screen. But how close is close? The answer varies by screen size. The same viewing distance that is “close” for a 70-foot screen is “far” for a 20-foot screen. To account for screens of different sizes, we need a special way to measure viewing distance. That’s why engineers consider viewing distance as a multiple of Picture Height (PH). Based on widely-accepted measures for the threshold of visual acuity, 2K presentation will satisfy audience members with 20/20 vision who sit at distances of Picture.