What is microfocus shooting?

Micro-focus shooting refers to macro shooting.

Macro photography refers to the optical ability of a camera to shoot an image as big as (1: 1) or slightly smaller than the actual object through the lens. For example, taking a flower with a diameter of 2 1.6mm can fill half the area of 35mm film (diagonal length is 43.3mm). The magnification of the flowers in the photo is 43.3: 2 1.6, which is 2: 1(2 times). The magnification of macro photography is usually between 1 and 50 times, and strictly speaking it should be between 1 and 10 times.