Camera Awesome is now universal and ready for the iPad. If you already have the iPhone version, look for it to show up on your iPad. I never thought much of the iPad as a camera platform, but I've learned over time that many people do use it as a camera, and appreciate the larger display for the viewfinder and when editing.
The app presents several guides while you compose your shot, including moveable focus and exposure points. It also helps you get the horizon level, and offers overlays to assist in the overall composition of your image. There is also a helpful slow and fast burst mode for capturing action, as well as selectable timers for triggering the photo.