What constellation is zoom?

The zoom symbol is usually a telescope-like icon, representing the "zoom in" or "zoom in" function.

Zoom is a photography and video shooting technology. By changing the focal length of the lens, you can shoot from different angles. In photography and film and television works, zoom lens can help directors and photographers better express the story and create various visual effects. The zoom lens can be switched from wide angle to telephoto when shooting, which makes the picture more dynamic and stereoscopic.

The zoom lens can change the viewing angle in the picture without moving the camera position. This allows the photographer to flexibly adjust the picture composition according to the shooting needs, and better present the story and the relationship between the characters.

By adjusting the focal length of the zoom lens, the depth of field of the picture can be changed, so as to achieve different shooting effects. A smaller focal length will produce a shallower depth of field, which will blur the background of the picture and highlight the subject; A larger focal length will produce a greater depth of field and keep more details in the picture clear.

The role of scaling:

1, lens switching: When the lens is gradually brought closer to the subject from a distance, or gradually pushed away from a near place, it means that the photographer is using a zoom lens.

2. Angle of view change: When the size, shape or background elements of the objects in the picture change obviously, it may be the result of the photographer changing the angle of view with a zoom lens.

3. Image compression: In the process of zooming, the background space will be compressed or enlarged, resulting in visual impact. For example, when close to the subject, the focal length becomes smaller, the viewing angle becomes larger, and the background elements appear closer; When away from the subject, the focal length becomes larger, the viewing angle becomes smaller, and the background elements appear farther.

4. Motion of the lens: If the lens rotates or translates during shooting, it may be using a zoom lens.