Is the telephoto lens just a magnification?

A telephoto lens is not only zooming in, but also zooming out.

A telephoto lens is a photographic lens whose focal length is longer than that of a standard lens. Telefocal lenses can be divided into ordinary telephoto lenses and ultra-telephoto lenses, which can be reduced or enlarged. The focal length of ordinary telephoto lens is close to that of standard lens, while the focal length of ultra telephoto lens is much larger than that of standard lens. Photographic lenses with a focal length of 85 mm-300mm are ordinary telephoto lenses, and lenses with a focal length of more than 300mm are ultra telephoto lenses.

The main function of telephoto lens is to take distant scenes into the lens. A telephoto lens is different from a standard lens. A telephoto lens has a much longer focal length and a much smaller viewing angle. A telephoto lens displays a much larger image. Therefore, at the same distance, the telephoto lens can take larger images than the standard lens. For telephoto lenses, they are better at shooting distant images and shooting details.

Application of telephoto lens

1, pat people

Using the fuzzy background of telephoto end is suitable for shooting portraits. It's unnatural to get too close to the characters during the shooting. Shooting people with telephoto lenses can make them more relaxed and natural.

2. Shoot birds and the moon

Super telephoto lens can shoot the big moon and birds flying in the distance. The telephoto lens is a necessary tool for bird catchers and lunar photographers.

3. Shooting sports

We have seen many great gods shoot sports with "long guns and short guns" in major sports events, because telephoto lenses can shoot at a long distance but sports events can't shoot at close range, and telephoto lenses are basically the standard for shooting sports themes.