High Definition

This site is full of wallpapers of all tastes and kinds , they can be Anime,Models,Cars,Nature,Abstract .. and you may say they don't have anything in common , they do .. the majority of them are of a certain aspect ratio , standard 4:3 , HD , or wide screen
"The term high definition once described a series of television systems originating from the late 1930s; however, these systems were only high definition when compared to earlier systems that were based on mechanical systems with as few as 30 lines of resolution. The ongoing competition between companies and nations to create true "HDTV" spanned the entire 20th century, as each new system became more HD than the last" Wikipedia
this group target is to let people put the HD icon , next to any group or groups icons that the picture belong to , so it is easier for anyone searching

It is like a mini Desktop Nexus world ...in HD If you are new to the concept, when we talk about 16:9 or 4:3 or 2.35:1 formats, we're talking about the rectangular shape of the video image, or what is called its aspect ratio. The standard TV that's been around since the mid-50s has an aspect ratio of 4:3. That means the picture is 4 units wide for every three units of height. Meanwhile, the new HDTV standard is 16:9, which is 16 units of width for every 9 units of height. So HDTV's 16:9 is a rectangle that is, relatively speaking, horizontally wider than older TVs, which by comparison look almost square.