Though the application of security CCTV camera hasn’t changed much over the past few years, the equipment and tools have changed considerably. Cameras became smaller, better and inexpensive, but the main breakthrough happened in the recording device.
Hence, various customers shopping for complete 4 camera security system with DVR are baffled by such an assortment of available products. The aim of this post is to guide shoppers toward the best possible and the most advantageous type of CCTV equipment, based on the necessities and application.
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| 4 camera security system |
Choosing the ideal cameras
It is literally impossible to describe all types of cameras available. We will emphasize our attention on the most popular and extensively utilized camera types rather.
A security CCTV camera creates images utilizing CCD or CMOS chips. Small, inexpensive CCTV cameras generally utilize CMOS technology, create inferior quality images and have quite poor light sensitivity. Good quality CCTV cameras utilize CCD technology. The size of the CCD chip is generally half inch or smaller. As a thumb rule, the bigger the size, the better the quality of the image created and the higher is the price. Nonetheless, higher density chips can now create as good image as half inch chips or much smaller chips.
The number of TV lines linked with the security recorder reflects how good the picture resolution will be. The more the number of TV lines, the better will be the resolution and therefore, overall picture quality. They might have 350-380 lines in a standard resolution camera, but 400-500 TV lines is considered high resolution. Black and white chip cameras create better resolution and light sensitivity, hence they are ideal for use in the dark areas while light conditions are inferior in most cases.
