Is the lens magnification related to the shooting purpose?

Any shot is suitable for shooting any subject, mainly depending on the photographer's intention.

The human lens ranges from 35mm to 100mm. It is generally believed that the vision is relatively small and it is not suitable for the scenery, but this is not absolute, it depends on the intention.

A lens with a large magnification is called a macro lens.

Macro lens is a kind of lens that can focus very close to the subject, and the size of the image formed by macro lens on film is almost equal to the real size of the subject itself.

Image size and real object size on film

This relationship is called replication rate. The ratio of 1: 1 means that the image on the film is the same as the physical size, the ratio of 1:2 means that the image on the film is half the physical size, and the ratio of 1:3 means that the image is physical 1/3, and so on.

Different manufacturers use different standards to name their macro lenses, which leads to some confusion. Generally speaking, we think the following terms are more appropriate.

Macro lens (macro)

Lens) refers to a lens with a reproduction ratio of 1: 1.

Macro focusing lens (macro focusing)

Lens) refers to the lens whose reproduction ratio is between 1: 1.2- 1:2.

Near-focusing lens (near-focusing)

camera lens

) refers to complexity

The system ratio is between 1:2- 1:4.

Although the macro lens is usually a lens with a medium focal length, it can actually be a lens with any focal length, including a 50mm macro lens, a 100mm macro lens or a 70- 180mm macro zoom lens. Giving the lens a macro name can only show that the lens can focus on the subject closer than the ordinary lens.

Macro lens is very valuable for shooting small objects, such as insects, flowers, stamps and so on.

The photo shown in the picture was taken with a macro lens, and the flower seeds look like wonderful abstract patterns. The trick of taking macro photos is to focus accurately; Because the clear focus range of macro photos is very small, only a small part of 1 inch. For example, to take macro images of bees on flowers, it is necessary to ensure that bees focus accurately and clearly; Suppose that the distance from the lens to the bee changes even if it is less than 1/4 inches, and the clear focus will be lost. Therefore, in the process of taking wonderful macro photos, focusing is extremely torturous.

This kind of lens is suitable for shooting some small objects, which is especially important for product photography and other topics!