How to focus stack a set of images in Photoshop

I recently rented a Nikon 105mm VR Macro lens for a weekend, and wanted to experiment with different types of macro photography.

One of the things I was most interested in was focus stacking. See, there's a problem with macro photography in that you're dealing with a depth of field measured in millimeters when reproducing images at a 1:1 ratio, even stopped down to f/8 or f/11. And, wanting to avoid diffraction at higher apertures, there's no way to take a straight-out-of-camera picture of a 3D object that's sharp from front to back.

(There's also a video version of this post, embedded below)

DIY - Mini Macro Studio for less than $0.02

Perhaps you're tired of taking pictures with the DIY Greenscreen you just made, or you have had enough fun (for now) keying out backgrounds in Photoshop... but now you want something more. But you don't want to spend more than 2 minutes setting up for your next project. Well, how about a do-it-yourself mini macro studio that is made of materials you already have within arm's reach, and can set up in less than two minutes?

iPod shuffle

My iPod shuffle...