What are the uses of telephoto lenses and wide-angle lenses?

The telephoto lens has a long focal length, a small angle of view, and a large image on the film. Therefore, it can capture a larger image than a standard lens at the same distance. Suitable for shooting distant subjects.

Because its depth of field range is smaller than that of a standard lens, it can blur the background more effectively and highlight the subject in focus. Moreover, the subject is generally far away from the camera, resulting in less distortion in the perspective of the portrait. , the portraits taken are more vivid, so people often refer to telephoto lenses as portrait lenses.

Wide-angle lenses are widely used in large-scale landscape photography. It can increase the spatial depth of the photographic picture; the longer depth of field ensures that the scenery before and after the subject can be clearly reproduced on the picture.

So, the vast majority of modern pocket automatic cameras use ordinary wide-angle lenses of 38-35 mm; the lens covers a large area and can capture a wide range of scenery;?

In the same The image of the scenery photographed at the shooting distance is smaller than that of the scenery photographed with a standard lens; defects such as perspective deformation and image distortion are prone to occur in the picture. The shorter the focal length of the lens, the closer the shooting distance. This defect The more obvious it is.

Extended information:

Using a long focal length lens to shoot has the following characteristics:

1. Small viewing angle

So, The spatial range of the scene being photographed is also small. At the same shooting distance, the image captured is larger than that of a standard lens. It is suitable for photographing the details of distant scenery and photographing subjects that are not easily accessible.

2. Short depth of field

So, the subject in a cluttered environment can be highlighted. However, it brings certain difficulties to precise focus adjustment. If the focus adjustment is slightly inaccurate when shooting, the subject will be blurred.

3. Poor perspective effect

This kind of lens has the characteristics of obviously compressing the depth of space and exaggerating the background.

Baidu Encyclopedia-Telephoto Lens

Baidu Encyclopedia-Wide Angle Lens