Make a retina ready ad
A client wants a 500x500 pixel ad. I get how for websites you want to make retina images at 2x size (1000x1000) and then code it in to restrain to 500x500 pixels.
But this image is not necessarily going onto a web page. She may just tweet the image or something. So how do I make her a retina friendly image now? If I make it 1x it doesn't look so hot, and if I save down a 2x image to .5x it doesn't look good either.