What kinds of lenses are there?

1. According to the focal length, there are fixed focal length, telescopic, automatic aperture or manual aperture.

2. According to the digital size of the focal length, there are standard lenses, wide-angle lenses and telescope heads.

3. According to the classification of aperture, there are fixed aperture, manual aperture and automatic aperture.

4. According to the lens telescopic adjustment mode, there are electric telescopic lenses, manual telescopic lenses and other types.

In film and television, the lens has two fingers, one refers to the optical components used by film cameras and projectors to produce images, the other refers to the continuous picture taken from power on to power off, or the fragment between two editing points, also known as the lens. One finger and two fingers are two completely different concepts. In order to distinguish, one refers to the optical lens and the other refers to the lens picture. According to the origin of lenses, mainly Japanese lenses and German lenses. Japanese lenses mainly have good color reproduction, while German lenses have a strong sense of layering. China's lens has gradually occupied a certain market in the market, mainly because the price is relatively low.