CCTV Surveillance Cameras
CCTV cameras are indispensable as surveillance devices. They are extremely effective in monitoring and checking illegal activities and thefts. Clear images produced as CCTV camera footage can be used as evidence in case an unfortunate and untoward incident occurs. CCTV cameras can be installed in various places be it your office, your home or your garage or be it any public place like subways or grocery stores. Based on its usage, CCTV cameras are equipped with a variety of lenses. The deciding factors are usually the area being catered to and the placement of the camera. These lenses are designed to cater to various functions. One of the most popular ones in the zoom lens which can be controlled either remotely or manually. The zoom lens enables capturing of the image through a wider angle and enables a clearer picture of the desired object. Many a times, this zoom function has led the authorities to culprits in case of thefts. In case you are installing a CCTV camera at home for security purpose, then do ask your CCTV Installation company to include the zoom lens as well.
Working of the CCTV Camera Zoom Lens
The first thing that you need to keep in mind during using the zoom lens is the zoom range. This enables you to know about the maximum range of zoom of the CCTV camera.
When the zoom function is controlled remotely, then the same is basically achieved by rotating a lens with the help of a motor that moves the components of the glass. The latter function causes a change in the focus level of the zoom lens.
In case of electronic lens, the zoom in and zoom out functions are accompanied by a typical distinguishable sound.
The different elements those are present inside the lens move farther from or towards the focusing element in case the zoom lens is adjusted manually. Thus the view changes too accordingly.
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