The difference and choice between wide-angle lens and telephoto lens in portrait photography

The lens with short focal length is a wide-angle lens, which is generally considered as a wide-angle lens below 35 mm on 135 camera. As the name implies, a wide-angle lens has a wider viewing angle. The shorter the focal length, the more things in the field of vision, and of course the smaller it looks. The perspective of wide-angle lens is characterized by a strong sense of space, which is large near and small far away. It is easy to produce barrel distortion in which the surrounding lines protrude outward. Suitable for photography subjects such as scenery and architecture.

It is generally believed that the focal length of telephoto lens is greater than 135mm. The longer the focal length, the narrower the field of view, similar to the effect of a telescope "hanging" a distant scene, so it is also called a telescope head. There are few things in the field of vision, and they look big. The longer the focal length, the less obvious the sense of space. It is easy to produce pillow-shaped distortion with inward ridges around it. 135-200 telephoto is suitable for taking portraits, runway models, etc. More than 300 telephoto lenses are mostly used in wildlife and sports photography.