I liked Camera Awesome for iPhone (free) when I tested it last spring. It's a feature-rich app that helps you compose an excellent shot and then edit your image to perfection.
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 ge