File:3840 × 2160.jpg: Difference between revisions

Feb 2015

Our new standard for 'Earthview' images is 3840 × 2160 (Our standard was 1920x1080)

Going forward 3840x2160 will align us/GrnPol with 4K 16:9 aspect ratio / Ultra HD

For faster downloading, render/compress/resize images proportionally down from 3840x2160 (full size) to the following pixel sizes - e.g.

1536x864 (to 40% of full sixe/xxlarge)

1152x648 (to 30% of full size/xlarge)

768x432 (to 20% of full size/large) or

384x216 (to 10% of full size/small) _ _ _ _

History / discussion [Feb 2015]

2.39:1 4096x1716 / 2048x858 / (for 4k 2.40:1 (2.39:1) -- 4096x1714 / 1920x803

16:9 3840x2160 / 1920x1080 / (for4k 1.77:1 (16:9) -- 4096x2304 / 854x480 or 872x486 (720x480)

http://en.wikipedia.org/wiki/4K_resolution

http://unravel.com.au/files/Unravel_Resolution_CheatSheet.pdf

http://www.red.com/learn/red-101/video-aspect-ratios

http://en.wikipedia.org/wiki/Display_resolution

http://en.wikipedia.org/wiki/4K_resolution

4K 4096x3072 pixels (4:3)

http://www.ce.org/News/News-Releases/Press-Releases/2014/Leading-Television-Industry-Players-Line-Up-To-Sup.aspx

http://www.cnet.com/news/youtube-now-supports-4k-resolution-videos/