Aperture 3 and Photoshop CS5 are two key applications in my digital photo editing workflow. I have been increasingly teaching my DSLR photography students my post processing workflow, in addition to in the field making photograph lessons. I rely heavily on keyboard shortcuts for greatly speeding up my editing, which is necessary when I have to deliver hundreds of images to clients in a short period of time.
So I put together a quick guide of the keyboard shortcuts I most commonly use in Aperture 3 and Photoshop CS5. Most of these keyboard shortcuts should also work in older versions. I learned them by looking through the menus and seeing the shortcut letter, by accident and by reading other photography websites.
Let me know any additional keyboard shortcuts you use in the comments below.