Focus Stacking Macro Photographs with a Hacked Flatbed Scanner
Focus stacking is when you combine multiple photographs of different focus distances in order to obtain a single photo with a much greater depth of field than any of the individual shots. This can be done by turning the zoom ring on your lens, but this can be difficult to control (especially for highly magnified photos). It can also be done using special rigs designed for the purpose, but those are generally quite pricey.
Photographer and software engineer David Hunt recently came up with the brilliant idea of turning an old flatbed scanner into a macro rail for shooting focus-stacking photos.
