What is the Difference Between Varifocal CCTV Lenses and Fixed CCTV Lenses?
Varifocal lenses are a type of lens commonly used in closed-circuit television (CCTV) cameras. Unlike fixed focal length lenses, which have a predetermined focal length that cannot be adjusted, varifocal lenses offer adjustable focal lengths within a specified range. The primary advantage of varifocal lenses is their flexibility in terms...