Matters needing attention in photography: what is focal length, how to shoot portraits with wide angle and scenery with telephoto.

Focal length refers to the distance from the center of the lens to the focal point, that is, the position of the camera film (focal plane). The longer the distance, the greater the imaging, and the farther the distance, the smaller the imaging.

The so-called 28mm, 50mm, 70mm and 200mm lenses refer to the length of focal length. According to the size of the diagonal of the film used, it is divided into standard lens, long focal length lens and short focal length lens.

Scenery can also be shot with a telephoto lens to reflect part of it.

You can also use a wide-angle lens to reflect the scene when shooting portraits.

There is no particular limitation,

Most of the wide-angle scenery shooting mainly considers the depth of field, and the scene is magnificent. The telephoto lens used for portrait shooting mainly highlights the expressions, movements and emotions of the characters, and the blurred background with small depth of field can highlight the subject better.