The Viewing Angle of CCTV Camera
Lens
Usually, at the market, we can see that the same CCTV camera we can make it at the lens of 3.6mmm, 4mm, 6mm and so on.
So you may wonder what is the difference between them? How far it can “see” for
the CCTV cameras? Here the “see” means we can see the objects clearly, like the
car number clearly.
Here we will begin with the fixed CCTV camera lens. Obviously, the fixed lens means the focus and iris are
fixed and can not to be changed.
For the 3.6mm CCTV lens, its viewing angle is 75°and can see the
car number plate clearly at the distance of 2.5m.
For the 6mm lens, its viewing angle is 60° and can see the car
number plate clearly at the distance of 5m.
For the 8mm lens, the viewing angle is 40° and the distance is 7m.
12mm, the 12mm lens, its viewing angle is 30° and the distance is 10m.
Of course, beasieds the fixed lens, we still have many many other
kinds of lens on CCTV cameras., luje the varifocal lens, varifocal lens with
auto Iris, and so on. We will talk about them at next time.
