Home security is more important today than ever before. No matter where in Houston you live, it’s essential you protect your home and family. One way to do this is to get a home security system with security cameras. The right security cameras can make it easier to protect your home and the people and things in it.
Types Of Security Cameras
There are a wide variety of home security cameras on the market today. They include varifocal cameras, night vision cameras, fixed cameras, field of view cameras, PTZ cameras, IR cameras, and focal length cameras. Having a home security specialist describe their strengths and weaknesses can help identify the type of security camera best suited for your home. They can also tell you if different types of cameras are needed for specific parts of your home.
Field of View And Focal Lengths
Field of View (FOV) is the area that can be seen through the camera. People or things outside the field of view cannot be seen live or captured and recorded by the camera. The FOV of a camera is determined by the camera lens’s focal length. The smaller a camera’s focal length the larger the field of view. Cameras with the widest field of view are called wide angle lenses. They are excellent for covering areas like yards or the entire outside of homes. Generally, however, the larger the area the camera overs the less detail about people and objects it can capture especially if they’re far away.
Cameras with larger focal length capture greater detail at longer distances. However, the field of view will be smaller. This type of camera is good if it’s used to cover cars or boats some distance from a power source and therefore a camera cannot be placed closer. Large focal length cameras are also good for if the camera needs to cover long hallways.
Fixed Lenses and Varifocal Lenses
A camera with a fixed lens cannot see or capture people or objects that move out of the field of vision in which it’s focused. The camera would have to be moved. If the camera has a varifocal lens, however, the focal length of the camera can be easily adjusted to film the repositioned person or object without repositioning the camera. Therefore, cameras being used to cover rooms and interior spaces should have fixed lenses. Cameras being used to cover larger areas from long range should employ varifocal lenses. This provides the home with maximum coverage.
Pan, Tilt, And Zoom (PTZ) Cameras
Houston homeowners looking for a camera that can cover wide angles and give focus views from both short and long range may find PTZ cameras to be their best choice. PTZ cameras can be remotely controlled to provide a wider more panoramic view, tilted vertically to show high or low areas, or zoom in to focus on people or objects some distance away. These cameras have a predetermined tilting, panning, and zooming range. Some of them can be programmed. This enables them to automatically move to cover a predetermined path on a set schedule. For example they can focus on the entrance when the children normally get in from school and the entire yard late at night.
Infrared cameras can view and record at night in low light. This is great for covering areas outside a home not illuminated by exterior light. The distance these infrared cameras can cover is called its illumination range. The homeowner can purchase an infrared camera with a standard or as long an illumination range as they need to secure their home.