How is CCTV camera coverage area calculated?
A simplified calculation for 1/4-inch CCTV lens can be made using the following formula:
- W (horizontal width) = (distance) * 3.2 mm / (Lens Focal Length)
- HorizontalAngle= 2 * arctan(SensorSize/(FocalLenght * 2))
- Watch Video Tutorial.
- Download trial version of IP Video System Design Tool [for Windows 11/10/8/7, 365 MB]
What is the angle coverage of CCTV camera?
With 1/3″ of image sensor, 2.8mm focal length will mean about 90° of coverage; 4mm focal length means about 70° coverage, 6mm means about 43.3°coverage, 12mm focal length translates to about 20.6° coverage. Note that different image resolution will also slightly affect the angle of coverage.
What is the range of 2MP CCTV camera?
2MP CCTV Bullet Camera, Camera Range: 20 meter
| Camera Technology | Analog Camera |
|---|---|
| Camera Resolution | 2MP |
| Camera Range | 20 meter |
| Camera Type | Wired Camera |
| Lens Size | 3.6mm |
What is the range of camera?
In photography, dynamic range is the contrast ratio between the darkest and brightest color tones that a camera can capture in a single exposure. Maximum dynamic range is the greatest range of light a digital camera sensor or strip of film can capture. Dynamic range is measured in stops.
How far can a 2.8 mm camera see?
around 10 feet
This is a lens that can be adjusted between the ultra wide 2.8mm and the telephoto 12mm. At 2.8mm you will see an angle of view a little over 100°, but the identification distance will only be around 10 feet.
What is maximum dynamic range?
Maximum dynamic range is the greatest range of light a digital camera sensor or strip of film can capture. Dynamic range is measured in stops. Each stop indicates a doubling of the level of brightness captured.
What is the angle of coverage of a CCTV camera?
For a CCTV camera or IP camera, the angle of coverage is a feature that describes the angle range that a CCTV camera lens can image. In this, the video image circle is produced by the lens which is big enough to cover the CCTV camera image sensor completely. It is also possible to include some vignetting towards the edge.
What is the CCTV camera range?
People selling CCTV are often very misleading when it comes to CCTV camera range. They normally quote two figures, the number of TVL and the IR range. This might be called the night time range. IR range is a largely made up number based around how far away from the camera Infra red light can be detected.
What is the FOV of CCTV cameras?
In everyday language the Field of View of Field of Vision, abbreviated as FOV, refers to that area which is visible through any optical instrument, which could be the human eye or a lens. This definition can be applied to the CCTV parlance and FOV can be defined as the width or height of a scene to be monitored by the security camera.
Should I buy a fixed or varifocal CCTV camera?
For that reason we would always advise buying varifocal rather than fixed lens cameras. An approximate guide to the optical range of different lens cameras ie. the distance at which a number plate or a person can be identified using standard definition CCTV. For HD1080P systems you can double these figures.