About Focus Stacking

Focus stacking combines multiple images taken at different focus distances to give a resulting image with a greater depth of field than any of the individual source images.

In the example below, you can see in the first two images that only part of the subject is in focus.  The third image is final result of 21 images combined.

First image in stack

Last image in stack

21 images, ISO100, F11, 5sec, Canon EOS 5D Mark II, Canon EF12 II extension tube, Canon EFS 60mm at 1:1:1.5

You can see more of this mineral on this page

And here is my 'studio'.  Captured while photographing the image above.