Camera lens classification?

The camera lens is an optical component. The cameras we purchase are all without lenses, and the lenses need to be purchased separately. Lenses can be divided into: 1. Fixed-focus fixed-aperture lens: The aperture and focal length are both fixed. It is generally used indoors where the light does not change much and it is used for fixed monitoring of a certain location. 2. Automatic aperture lens: The focal length of this kind of lens is fixed, but the aperture can be automatically adjusted. It is generally used in places with large changes in light. An automatic aperture lens must be used for outdoor monitoring. There are two commonly used ones: DC driver and video driver. 3. Variable lens: refers to a lens whose focal length and aperture can be adjusted, which is divided into two types: manual zoom and automatic zoom. When using electric zoom, you need to connect the corresponding decoder to control it. According to the viewing angle range, it can be divided into: 1. Wide-angle lens: The biggest feature of wide-angle lens is that it can shoot a wide range, with shooting features such as exaggerating the sense of distance and wide focusing range. A wide-angle lens has a short focal length, a wide angle of view, and a deep depth of field, making it more suitable for taking photos of larger scenes. 2. Telephoto lens: The telephoto lens is used to monitor distant objects. The longest focal length can reach 1100mm. Thank you for your attention to telecommunications products. I wish you a happy life.

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