What is telephoto lenses?

Telephoto lens is a camera lens designed to allow people to take long focal distances using a real length lens, which is shorter than the focal length. For example, 400 mm telephoto lenses are not really 400 mm long, unlike a conventional lens 400 mm. There are a number of reasons why people might want to use a telephoto lens, from the need to have a camera that is easier to handle, but still capable long focal lengths for the desire to use specific features of the telephoto lens. Some telephoto lenses are relatively long, but it is not necessarily and long lenses are not always telephoto lenses. This term refers to the lens of very specific constructions, not to a specific length.NS in front of a film that works to increase the front lens. This second element effectively increases the focal distance of the camera by appearing that the first lens is further away than it really is. Historically, a telephoto lens was sometimes achieved using lenses placed in front of an optical tool, but today is withTrucura built directly into the lens.

The primary reason for using a telephoto lens is to photograph objects remotely. The lens with a short focal length cannot take good images of things in the distance. The longer the focal length, the more details can be seen at a distance. The telephoto lens also occurs some compression, with more objects in the visual field. As the focal length decreases, the field depth expands, which changes the appearance and feeling of the image.

People often want to photograph the focus distance, such as when someone on the coast wants to take pictures of ships. However, the lenses needed for such photographs can be very long and cumbersome. They make the camera difficult to handle and also burden the lens holder and can damage it. Telephoto lens allows photographers to have the best of both worlds in the form of long focal lengths and shorter lenses.