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CCTV Cameras

 

Any Video Security System starts with CCTV security cameras. The images you see and record can only be as good as the images produced by your CCTV security cameras. Good security cameras produce good images and vice versa. There are several critical specification factors which affect the performance of your cameras and consequently, the quality of your camera images. These factors also affect the price of cameras. We offer a selection of CCTV security cameras to meet almost any situational need and budget. All our cameras provide excellent specification factors, overall quality and excellent images, coupled with very competitive prices.

Black and White (B/W) cctv security cameras were the most widely used just a few years ago because of price and better light sensitivity. Today, color cctv cameras have narrowed the price gap and some of our color cctv cameras are as light sensitive as B/W cameras. Because color video is much more lifelike than B/W and provides much more positive identification, most cctv cameras purchased today are color units.

 

The main performance factors are:

The Type and Quality of the Imaging Chip in the camera.

CCTV security cameras produce images using CMOS or CCD ( Charge Couple Device ) chips. Tiny, very low price cctv cameras usually use CMOS technology, produce poor quality images and have very poor light sensitivity. Decent quality cctv cameras use CCD technology. The size of the CCD chip is normally 1/4", 1/3" or 1/2". As a rule of thumb, the larger the size, the higher the quality of the image produced and the higher the price. However, higher density 1/4" and 1/3" CCD chips can now produce as good an image as many 1/3" or 1/2" chips.

 

The Make of the CCD chip in the camera.

Not all CCD chips are equal, even with the same specifications. Quality varies by manufacturer. Panasonic and Sony are generally recognized as producers of the best CCD chips. All CCTV cameras supplied by Sentry Security Systems use CCD chips from these two manufacturers.

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