I bought Reflection right away because, like I said, this is something I've been looking forward to, and whilst I don't think this method can replace higher quality HDMI connections just yet, it sure provides a handy way of getting an iOS device's screen onto your Mac. Sort of the opposite of apps like Skala Preview, only working natively with iOS 5 and a desktop app that handles the incoming video stream.
Speaking of which, quality of WiFi and video can obviously become a major deal-breaker for many -- especially developers or bloggers who are looking at Reflection as a way to record iOS screencasts and demoes with the comfort of a Mac and the tools it makes available for video recording and editing. Now, I'm no video expert, but I'm fairly certain some sort of lossy compression is applied when mirroring an iOS device to the Mac through Reflection -- but I've only spotted this loss in quality (example) a few times. Once installed, Reflection allows you to set some default settings for all incoming connections: you can set a receiver's name, force full-screen mode (Lion's native one) on all new Mirroring sessions, and optimize the app for different device types. These include standard iPhone resolution (320x480), Retina iPhone (640x960), iPad (1024x768), Hi-Res (1920x1080) and Any Device (1280x720). Similarly, devices can be mirrored inside a "frame", and you're also given the option to force orientations with keyboard shortcuts -- unfortunately, the frames provided in Reflection don't look nearly as great as ScreenTaker's, so here's to hoping for better graphics in a future update.
As I mentioned above, performances haven't really been an issue with Reflection and my iPhone 4S/iPad 2 on the two local networks I tested the app with (powered by an AirPort Extreme and AirPort Express), but I have some points to make in regards to usage and why you should try or avoid Reflection.
- If you're looking for pixel-perfect reproductions of your iOS display on your Mac, consider something else. Reflection may experience the occasional drop in quality (or simply crash -- it happened to me only twice though), and you don't want to record your screencasts and promo videos over and over.
- If you just need a quick way to demo iOS apps on your Mac, buy Reflection.
- If you create your presentations on an iPad and have always looked for a way to easily mirror them on the Mac with no cables, get Reflection.
- I have been using Reflection to play Temple Run and Whale Trail (iPhone versions, because I like the controls better) on the Mac's screen, and performances have been pretty great. Games are playable, there are some minor slowdowns here and there but nothing that truly impacts the experience. Reflection crashed once while mirroring Temple Run.
- Generally speaking, iPhone games at Retina size to a Mac in full-screen mode can be a good alternative to buying Mac versions of the same games again. I'd recommend playing puzzle/adventure or more relaxed games this way, avoiding more frenetic games (action, sports) due to the possibility of slowdowns and crashes. But: I can confirm GTA III for iOS mirrored to the Mac seems like the future.
- I have also tested the Plex app (for iPad) mirrored to the Mac with content from a Mac mini in the US with basically zero lag. Keep in mind Reflection supports the full AirPlay Mirroring experience, which includes audio.
- Reflection is a great way to keep often-used or dashboard-like apps for iOS on the Mac's screen -- but you'll want to click on them, so remember this is AirPlay Mirroring, not VNC.
As you can tell, I'm impressed by Reflection. It is already a very stable and responsive "hack" to get AirPlay Mirroring on the Mac, and I'm sure the few bugs I've encountered will be addressed soon with an update (as well as performances in general). Reflection won't give you 100% reliable color reproduction and pixel state-of-the-art, but if you've been looking for a way to "just get" Mirroring on OS X, I can't think of a single reason why you shouldn't (at least) try Reflection.