PPI stands for Pixels Per Inch. To find out, how I calculated PPI for various screen, pls. check the followings.
- iPhone 6 Plus: Retina HD Display; screen 5.5 inch (diagonal); resolution 1920×1080, px; d square = 1920*1920+1080*1080; d square = 3,686,400+1,166,400; d square = 4, 852, 800; d =2,202.907170082298; ppi = 2,202.907170082298 /5.5 = 400.5285763785997ppi | 401 ppi
- iPhone 6: Retina HD Display; screen 4.7 inch (diagonal); resolution 1334x750-pixel resolution at 326 ppi
- iPhone 5S : Retina Display; screen 4-inch (diagonal); 1136x640-pixel resolution at 326 ppi
- iPhone 5C: Retina Display; screen 4-inch (diagonal); 1136x640-pixel resolution at 326 ppi
- MacBook Pro: screen 13.3 inch;Retina display: 2560x1600 px resolution; d sqr = 6,553,600+2,560,000; d = 3,018.873962258113; d = 54.94428052361877; ppi = d/13.3 = 226.9830046810611 | or say 227 ppi .
- MacBook Pro: screen 15.4 inch;Retina display: 2880x1800 resolution; 220 ppi .
- iMAC with Retina 5K Display : 27-inch; 5120x2880 resolution; 218 ppi.
Comments
Post a Comment