Unlike other cameras, Dome cameras are mounted on ceilings of the building. Dome cameras are in small and compact. They are easy to install and little bit too hard to discover by. The cameras come in mostly white and black color which makes it hard to spot. With the installation of these cameras at a height, they focus on wide area of coverage. These cameras have smooth rotating movement to catch each movement across the boundaries. The cameras are infrared had smooth operation even in nights.

HD is an abbreviation of high definition camera. The camera with high definition feature provides better pixel resolution compared to other normal cameras. These cameras generally come in from 720 pixels to 1080 pixels. The camera work better than others in night vision too. The recording is viewed with the HD CCTV device such as video cameras, HD DVRs and repeaters connected to them. It is generally an outside purpose devices having high pixel.

Bullet cameras have got its name by the shape and size of the camera. The cameras have a primary purpose of surveillance. Bullet cameras are easy to install and are better for the small surveillance areas. Bullet cameras come with different lens size according to the requirements. The cameras have a structure with a mounted bracket. These have full auto gain control. Bullet cameras come with regular or day and night models to choose and install.

PTZ cameras are basically the Pan, Tilt and Zoom cameras. The high end cameras have an ability to zoom up to 32 X on subjects. The camera can be easily mounted on corners to cover a specific region for the surveillances. These camera’s patrolling is both automatic and manually. The PTZ camera has effective operation of performance when controlled by the operators on surveillance. The powerful zoom and autofocus features make this small camera falls into category of strong and powerful security cameras.

Wireless camera takes out the hassle of restriction of camera at places. These cameras are easy to install outside or inside the complex for the surveillances. The camera has a very wide range of transmission. The wireless cameras are also come with the options of two way communication between receiver and camera. These cameras offer wide range from analog wireless to digital wireless. Some wireless security cameras also come with battery power making the camera free to install irrespective of boundaries.

Not every camera is meant to be in view. Discreet cameras are the spy camera installed to keep away from the sight of subjects. These cameras are often in disguise as pens, spectacles or any object of daily use. The Discreet cameras come of small and compact designs. The installation is quite easy. The camera offers both wired and wireless medium of connections. It is connected with the viewing device to record or view the ongoing recordings. Control of camera is done both by manually and remote controlled.

Each surveillance cameras are not same. Varifocal cameras are usually camera with varying focus. These cameras are used for wide coverage or to focus on to the subjects of interest. These are most likely to keep patrolling over the place. The camera adjusts their lenses, without any help of operator. The adjusting focal feature makes it effective for outside location installation. Varifocal camera provides high resolution images. The cameras are cost effective and light weight to handle and install.