Setting up your very own CCTV (Closed Circuit Television) camera system can be quite intimidating. However, it is not that difficult in installing the surveillance cameras although they do require a certain method for them to get the best possible results.
There are many types of CCTV camera system and they are usually used for commercial purposes. The camera systems they have are not plug-and-play so you will need a bit of understanding of the system in order to set it up correctly.
It is important to get a hold of a CCTV camera system before planning how to set them up. CCTV cameras are usually made for indoor use and they have a wide variety of lenses which you can use with it. Mostly, the cameras of CCTV’s do not come with lenses and will need to have a particular type of lens which could be used based on the format of the camera. Their cameras usually use 24 volts AC instead of the widely used 12 volt DC that most other security cameras use. There are some CCTV cameras however that come in dual voltage. This is possible because they are equipped with a special type of circuitry that enables you to use either 24 volt AC or 12 volt DC.
There are a variety of lenses for CCTV cameras which include powered and non-powered lenses, varifocal, zoom and fixed, as well as auto iris and manual iris.
A powered lens requires power to operate while the non-powered lens does not require any. An auto-iris can automatically adjust its iris to allow or limit light in the camera while the manual iris requires manual adjustment to allow the iris to receive sufficient light. Zoom lenses are powered lens which allows zooming in and out in real-time, varifocal lens are manually adjustable which are then locked in place, while the fixed lens have a fixed viewing field.
The concept of having a surveillance system can be a very effective deterrent for criminals. However, a CCTV camera simply has a much broader range of adjustments that its presence alone can add to that overwhelming effect.