What is macro photography?

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.

"Macro" refers to close-up shooting, with a large magnification, and the human eye often can't see the objects close to 15cm clearly, and the optical school of professional macro lens is designed according to the needs of close-up shooting. According to German industrial standards, the imaging scale is greater than 1: 1, which is called macro photography. The dandelion on the right shows an image as big as the scene on the negative. The definition in the American Dictionary of Contemporary Photography is this: "Child"

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The image taken by the camera has a scale of 1: 1 or higher. "The proportion we are talking about here refers to the proportional relationship between the size of the negative image and the physical object. The maximum shooting ratio of the standard lens of 35mm camera is1:10. As a matter of fact, it is internationally recognized in the photography field that the images with the ratio of1:1:4 belong to macro photography, while those with the ratio of10:1~ 200:1belong to macro photography.