Introduction to photography

A telephoto digital camera refers to a model with a large optical zoom coefficient. The larger the optical zoom factor, the farther the scene is taken. If you want to shoot distant scenery, or don't want to disturb the photographer, telephoto will come into play.

Telefocus feature

The lens can be extended to a very long distance, such as 10 times, that is, a 35mm lens can be extended to 350mm, which is convenient for capturing distant scenes.

The longer the focal length, the shallower the depth of field, which is the same as the larger the aperture. The advantage of shallow depth of field is to highlight the subject and blur the background. Shallow depth of field can make photos look more professional, so it is favored by beginners.