Adobe has finally gone and done it. An iPad version of Photoshop called Adobe Photoshop Touch is out for the iPad via the App Store. It's tremendously impressive and to a lesser degree a bit frustrating. Let's start with the good stuff, because there's plenty of it. Getting a sophisticated photo app running on the iPad is no small task. It requires many controls and a lot of ways to complete tasks that differ from their counterparts on the desktop. Adobe has given this a lot of thought, and while Photoshop Touch isn't as full featured as Photoshop CS5, it brings a boatload of functionality to the tablet which will make every photographer anxious to buy the US$9.99 app without hesitation. Here's a brief run down of the features: Layer Support Image browsi