6. Better Cropping
I’d like to think I get the shot right in the camera every time (I don’t). Fortunately, Aperture 2 makes cropping a lot easier. You can hold down the Command key as you drag a crop rectangle and up pops a rule-of-thirds grid. This helps compose your crop for a better look. If you need to straighten a cropped image, the Straighten tool displays the entire image. This lets you see what parts of the image will "return" after you straighten the cropped image.