How is camera coverage calculated?

How is camera coverage calculated?

A simplified calculation for 1/4-inch CCTV lens can be made using the following formula:

1. W (horizontal width) = (distance) * 3.2 mm / (Lens Focal Length)
2. HorizontalAngle= 2 * arctan(SensorSize/(FocalLenght * 2))
3. Watch Video Tutorial.
4. Download trial version of IP Video System Design Tool [for Windows 11/10/8/7, 365 MB]

How is camera recording calculated?

CCTV Camera Storage Calculation Formula

1. *1000/8 = to convert kbps to Bytes.
2. *3600 = to convert from seconds to hour.
3. *24 = to convert from hour to day.
4. Cameras = total number of cameras.
5. Days = total number of days you want to record.

What is the storage capacity of CCTV camera?

A high-end DVR would typically be able to record 16 cameras on to a 2-terabyte disk. Using our worked example for a casino and assuming the very best compression available this would give just over 6 days of recording for all 16 cameras or 90 days for just one camera.

How do you calculate the focal length of a CCTV camera?

If you need to calculate the CCTV focal length, you should specify the following parameters: Distance from Camera – maximum distance from Camera to the target. Camera Installation Height – Security camera installation height. Field of View: Height – Height of the target (for example 1.8 m or 6ft for people).

What is 3.6 mm lens?

A 3.6mm lens is designed to provide an approximate 78° field of view and is the perfect camera in most CCTV applications. Most people think that a 3.6mm lens won’t show a large field of view, but as you can see from the below images, there’s not a huge difference between a 2.8mm and 3.6mm lens.

What is the maximum range of CCTV camera?

The C-mount cameras come with a detachable lens, which allows users to change it to fit their needs. For instance, the standard CCTV camera lenses can only cover distances between 35 and 40 feet. With C-mount cameras one can use special lenses, which can cover distances beyond 40 feet.

How many hours of 1080p video can 1tb hold?

500 hours
1 TB gives you the option of storing roughly: 250,000 photos taken with a 12MP camera; 250 movies or 500 hours of HD video; or.

How many GB does a CCTV camera consume per day?

60 GB is likely the most common storage consumption in today’s video surveillance systems. Unlike 6GB, it’s large enough to record quality video for some period of time but it is not too expensive. For instance, 16 cameras consuming 60GB storage each is 1 TB – which is the sweet spot of today’s hard drives.

What is a 90 degree viewing angle?

Think of the field of view as the angle between the two horizontal edges of the camera image. The camera with 90° field of view is wider and captures more objects in a scene, though each object takes up a small part of the camera image.

Which is better 2.8 mm or 4mm?

Although it has more clarity at a further distance, the 4mm lens shows a similar scene to the 2.8mm. The main difference is the reduced angle of view which gives the illusion that objects are closer to the camera. A 4mm lens is useful for detection & identification.