Basically an image can have larger dimensions, but can also be compressed more and you still get great results on a high-res screen.
Viewing entries in
Retina Display
“New York Day” and the approximately four-minute long video is only a teaser of what photographer Samuel Orr hopes to produce. One of the really cool things about this video is its employment of natural sound (or nat sound as we call it in the business).
The biggest pain of retina becoming the standard for computer displays is the extra work that's involved in making it work on the web. But it's possible to automate your retina (@2x) for web workflow thanks to Slicy, CSS preprocessors like Sass or Less and retina.js.