Here is my attempt using Photoshop CS5. It took some trial and error.





[img]/resized-image.ashx/__size/1024x0/__key/CommunityServer-Discussions-Components-Files/13/4721.FocusStack.jpg[/img]





With the camera on a tripod I focused on key aspects of the subject like the words Nerd, Calculus, Canon... ect. Shot with my 40D and EF 50mm f/1.2 at f/1.2 on Aperture priority and manual focus.