Air Display, the handy app that lets your iOS device pull double duty as a wireless external monitor, has been updated to take full advantage of Apple's Retina display. That means users can now utilize every pixel of real estate available on the new iPad's 2048 x 1536 panel, a resolution that's likely to shame most any monitor you put it next to. Perhaps even more exciting for users on Mac OS X Lion is the ability to enable HiDPI mode, which renders graphics at double their previous size. It doesn't sound like much, but the end result is superb: just like going from the iPad 2 to the new iPad, the vastly improved pixel density results in richly detailed images. How do these new features fare in actual use? Keep reading for our hands-on impressions.

To get starting using Air Display, you'll need to download the $9.99 app for your iOS device and then install the companion software from Avatron's website on either your Windows PC or Mac. To get the two communicating properly, both will need to be connected to the same wireless network. We had trouble getting Air Display to automatically detect our iPad, but manually entering the device's IP address — conveniently visible right within the app — worked flawlessly each time. Once paired, you'll configure Air Display's settings from the control panel (Windows) or system preferences (Mac) just as you would for any external monitor. Note that OS X Lion requires users to log out when enabling or turning off HiDPI mode.