- 1 How wide can a CCTV camera see?
- 2 What angle can a security camera see?
- 3 Which is better 2.8 mm or 4mm?
- 4 What is a 90 degree viewing angle?
- 5 How far can a CCTV camera go?
- 6 Does CCTV work in darkness?
- 7 What is a normal viewing angle?
- 8 How do I know if my camera is wide angle?
- 9 Which type of CCTV camera is best?
- 10 What does 2.8 mm lens mean?
- 11 How far can a 12mm lens see?
- 12 Is 90 degrees wide angle?
- 13 What is 160 degree viewing angle?
- 14 What is a 120 degree viewing angle?
How wide can a CCTV camera see?
A 4mm lens offers a horizontal view of about 61.93 degrees in a CCTV security camera. So, you will be able to see up to 120 ft. wide area at a distance of 100 ft. with a 4mm lens.
What angle can a security camera see?
Wide angle cameras often have field of views between 60 and 110 degrees. More modern smart cameras tend to go beyond 110 degrees to provide a little more coverage. Cameras in this range are the best for smart security cameras, as they provide enough distance and width to cover an entire yard.
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.
What is a 90 degree viewing angle?
The 90 ° field of view captures all of the objects but in lesser detail. As you can see in the example images above, the camera with 90 ° field of view captures all 3 objects in the scene, though each object takes up a small part of the camera image.
How far can a CCTV camera go?
Most security camera footage is stored for 30 to 90 days. This is true for hotels, retail stores, supermarkets, and even construction companies.
Does CCTV work in darkness?
Most CCTV cameras do operate in black and white during the night, and many security cameras adopt a monochrome filter during hours of darkness. Not only can infrared cameras see in conditions of total darkness, but they can also travel through smoke, dust and fog, capturing a clear image.
What is a normal viewing angle?
Normal, or Standard lenses (36–60 mm in 35 mm film format) cover between 62° and 40° Long focus lenses (any lens with a focal length greater than the diagonal of the film or sensor used) generally have an angle of view of 35° or less.
How do I know if my camera is wide angle?
On a full-frame camera, any lens with a focal length of 35mm or wider is considered a wide angle lens, while 24mm and wider is considered an ultra- wide angle lens.
Which type of CCTV camera is best?
Top 7 Types of CCTV Cameras To Suit Your Requirements.
- Dome Camera. The most economical among the lot, Dome camera is the basic type of security camera, which is meant for indoor installation.
- Bullet Type Cameras.
- C-mount camera.
- Day/Night CCTV Camera.
- Infrared/Night Vision CCTV Camera.
- Varifocal Cameras.
- Wireless cameras.
What does 2.8 mm lens mean?
This is the difference in the fixed lenses on the unit. 2.8mm gives you the widest view and is generally the most common, 12mm gives a zoomed in image. So if you are putting the cameras in a tight room go with the 2.8 if you want to see down a long hallway or view far away go with a higher one.
How far can a 12mm lens see?
At 12mm you will achieve around a 30° angle of view and identification at around 50 feet. The real trick is that this lens can be set to anywhere between those two different focal lengths.
Is 90 degrees wide angle?
Wide Angle lenses are designed for monitoring large areas, such as foyers, parking lots, or warehouses. 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.
What is 160 degree viewing angle?
For example, in a 160 /120 viewing angle, the first number ( 160 ) represents the horizontal viewing angle and indicates that an image on the screen is visible if we move up to 160 degrees horizontally (that its, from one side to the other).
What is a 120 degree viewing angle?
FOV: 120 degrees Another wide angle camera, 120 degree FOV is again a fit for huddle spaces. At one foot away, you gain 3.4 feet. At ten feet from the camera, that means 34 feet.