What kinds of lenses do SLR cameras have?

A wide-angle lens in this sense refers to a lens with a focal length below 35mm, such as a lens with a focal length of 28mm, 24mm or even 16mm. Generally speaking, a lens below 24mm is called a super wide-angle lens. The focal length of the lens should be multiplied by 1.5 or 1.6, so for this kind of SLR, 16mm can be considered as a super wide-angle lens.

2. Standard lens

Generally speaking, the focal length is 50mm or 85 mm, and the lens angle of 50mm is the closest to the human eye, but only because of this, it is difficult to use the pan/tilt well, because it can't take photos that the human eye can't feel like a super wide-angle or macro lens. 85mm lens is generally a portrait lens.

3. Medium telephoto lens

Generally, it is 100mm or 135 mm, in which the lens of 100mm is generally a macro lens, and the lens of 135mm is also a portrait lens, only focusing on the bust, while 85mm is more focused on the portrait of the whole body.

Extended data

A telephoto lens can be used to zoom in on distant objects, which is suitable for shooting distant scenes or inaccessible objects. For example, shooting stage performances or close-ups of wildlife sports events can obviously compress the spatial depth distance of the picture, flatten the picture and obtain the effect of shallow depth of field.

Although the telephoto lens can highlight the subject in a messy environment, it also brings certain difficulties to accurate focusing. If the focal length is slightly inaccurate when shooting, the subject may be blurred.

Baidu Encyclopedia-SLR camera lens