macro- just a general term
"Macro photography, also known as macrophotography, refers to taking pictures of small things at close range, traditionally macro photography is defined as any photo in which the subject has a 1:1 ratio with the photo negative"
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Photo stacking
"Focus stacking is a powerful technique for extending a photo's apparent depth of field, It's perhaps most useful in close-up and macro photography, since the camera lens's highest f-stop is often insufficient to render everything in focus"
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Quite a interesting and difficult set up to achieve.
Only have i seen better pictures on Big D from a botanist ?? ? who posted macro shots from where he worked in Hawaii shockingly good.
no depth of field which afflicts most macro shots.
not macro but similar effect is used in HDR photo's, just alter the f-stop either side of the set level.