@ricohflex
Your text on depth of field and lenses was quite accurate, but software like this goes way-way beyond that. If you wanted to photograph a daffodil flower, and fill the frame with everything in focus, none of your lenses could go anywhere near achieving that task, no matter how far you stopped it down. The technique used here is often referred to as extended focus, or extended depth of field. It's used extensively in scientific photography using a camera on a microscope, where the depth of field can be measured in fractions of a millimeter. The free program Combine ZP is an icon in this area, written by an entomologist for entomologists, but used from one side of the world to the other for photomicroscopy and anything else. The author stopped supporting the program some years back. You can still download it but it won't run under all versions of WIN 10.

Using the sort of software presented here you could not only get the front of the daffodil in focus, but everthing as far back as the waterfall on the horizon as well. You just take a series of images gradually changing the focus until you have covered the whole scene from close to far. Then the software combines only the parts in focus from every frame and presents them as onefully focussed image.

Icefire opals  –  5 years ago  –  Βρήκατε αυτό το σχόλιο χρήσιμο? ναι | όχι (+26)

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Just in case anyone doesn't get the purpose of this...
Photographic images have a limited "Depth of Field" (DoF) which is how much in front/behind where you focused is in sharp focus. This is worse for closer objects and longer lenses. While you can choose a smaller aperture to get a greater DoF, beyond a certain point diffraction softens the image (it gets worse at smaller apertures). This means you can't get all of some things sharp in a photograph.
What this software does is take a series of images which you shot while changing the focus distance a little for each one, so you have in-focus detail for the whole object (which needs not to move between shots, nor does the camera) but spread over several images. This will combine them to give the whole object in focus.
As pointed out below by dmf this was offered before, so check you don't have it already if it's the sort of thing you'd download.

JohnL  –  5 years ago  –  Βρήκατε αυτό το σχόλιο χρήσιμο? ναι | όχι (+17)

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Nice easy install. You use the registration code sent in the email twice, once to start the install and the second time to register the software.

Bill Strobel  –  5 years ago  –  Βρήκατε αυτό το σχόλιο χρήσιμο? ναι | όχι (+9)

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