As the name implies, the hallmark of cylindrical chambers is their form - the cylinder, at least - the cone. Usually they have a small size, which makes them not too noticeable. This kind of camera is convenient to install, they can attach to both the ceiling and the wall. Their "roundness" the price has no effect. There are external and internal, that is intended for use indoors or outdoors.
Inner cylindrical chamber
Bullet Camera are positive feedback from the designers. This species is widely used in areas where it is important not to draw attention to the fact of surveillance. Due to its shape the camera does not catch the eye corners and straight lines, which allows them to fit well into the interior.
From domestic primarily differ in the degree of protection, because the street the likelihood of unwanted effects above. Their protection class can reach IP65, which means full dust-proof, and the ability to withstand strong water pressure. Sometimes the purpose of additional security cameras are used to cover special lens, which does not affect the video recording process. External cylindrical video cameras are often equipped with additional illumination, which allows them not to pass to black and white night mode when lighting is poor, how come the rest of the camera. Some cameras that are used in particularly hostile environments may even have a heating system that extends the temperature range of a few tens of degrees.
It is important to know
If you decide to buy a cylindrical camera, be sure to pay attention to it and the lens focal length. Some devices of this type have a rather specific feature - fixed focus, that is the most clear picture will only be at a certain distance. And if you are interested in an object is only a foot closer or further away, its contours will begin to fade, do not give the opportunity to consider the details. It often plays a key role in the cases when it is necessary to recognize the face of a stranger or a number of machines. In addition, these cameras are equipped with non-removable lens, so after purchase, you can not replace it with a varifocal (lens with adjustable focal length).