The different types of CCTV cameras
At the most basic level, CCTV cameras are categorised as monochrome, colour or day/night.
The monochrome or the black and white CCTV cameras are generally ideal for areas with low light availability, as they are more sensitive to poor lighting, and can be used with infra red lighting as well. However it is usually best to go for colour CCTV cameras in areas with sufficient light availability as they provide the advantage of accurate recognition. Whilst a red or a blue car would both appear as grey on a monochrome camera, the colour camera helps to view objects more accurately.
A day/night CCTV camera on the other hand couples the advantages of both monochrome and colour cameras. They have the ability to switch from colour to monochrome depending on the availability of light. They can record the images in black and white in low light conditions and then switch to colour when the lighting improves.
CCTV cameras also differ according to the image sensors used. The light falling on the lens of the camera is focused on to the image sensor located behind the lens. It is the image sensor that converts the light falling on the lens into video signals. CCTV cameras are generally available with two different kinds of image sensors – CCD (Charged Coupled Device) or CMOS (Complementary Metal Oxide Semiconductors). Most CCTV cameras use the CCD image sensors, as they provide pictures of better clarity and higher resolution. The CMOS sensors are generally used in cheaper home security cameras and web cameras.
At CCTV4U, you can go through our online CCTV catalogue for the latest CCTV cameras and equipment available.
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