Is this a retina display?

There is a lot of debate about whether Apple's ‘retina’ displays are truly retina-class. But there's really no need for debate. Using some simple vision science principles, it is easy to test whether your display is retina-class. Here’s a test.

Circle 1Circle 2

Above, you should see two light circles on a dark background. [If not, click here.] If the two circles look identical, you have a ‘retina display’. If you see thin horizontal stripes in one circle, and thin vertical stripes in the other, your display is not retina-class. That’s it!

Let me know your results and find out more by clicking either: