Basic definition of macro photography

"Macro" refers to close-up shooting, with a large magnification, and the human eye often can't see the objects close to 15cm clearly, but 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: "Photography with the image ratio of 1: 1 or above". The proportion we say here refers to the proportional relationship between the size of the negative image and the real thing. 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.