I just had to try focus stacking. As you can see the difference between the two images it really does work. I exposed 12 different images slightly changing the focus back to front. A Nikon D800 was used with a 60mm micro lens. We ran the images through Capture One to the computer so we had some idea of how the focus was changing. It was very interesting.
How would this work on some large industrial facility where you could get everything from the far wall to the near bolt in focus? I am sure this has been done. It must give the image a hyper real existence. Kind of like doing a HDR image to the extreme. Sometimes you can tell it has been worked hard, other images you can’t. Just another tool in the box for digital. I could never have done this on 4×5 sheet film.