Q:5 meters away with the number of mm monitor camera lens appropriate?

If you need to look very wide and wide can also consider 2.8MM wide-angle lens. But the individual camera does not have this specification.

Q:What is the focal length of the camera lens in the elevator

Usually the 36mm lens Angle can cover the entire elevator, and the 2.8mm range is wider and applies to larger elevators

Q:Monitor knowledge! How much Angle camera is best for the 1.2m x 20 m?

Corridor is 20 meters if single export with a camera is ok, if there are multiple export requires added, hemisphere and the bolt can be, the lens Angle, need to look at how far, with 3.6 MM lens to see 3 m is the best effect, wide Angle lens are can cover the range of 1.2 meters, advice or 4 MM 6 MM lens, distance see 6-10 m works best, covering in 50 ° to 60 °

Q:What is the difference between the 2.4mm, 4mm and 6mm camera lens?

The smaller the number, the bigger the picture, the smaller the image. Use distance due to different actual site adjustment.

Q:4mm surveillance camera, can illuminate a few meters distance, lens front illuminate range is wide, right?

If the 4mm is a few tens of meters, the picture is very full, but the picture is very small.

Q:Monitor 8mm camera lens can be far

(2) to the camera lens specifications classification camera lens specifications should be based on the camera's CCD size, the two should be corresponding. When the camera's CCD target surface size of 1/2 inch, the lens should be selected 1/2 inch. When the CCD target size of the camera is 1/3 inch, the lens should be 1/3 inch. When the CCD target size of the camera is 1/4 inch, the lens should be 1/4 inch. If the lens size and camera CCD target surface size does not match, the observation angle will not meet the design requirements, or the screen outside the focus and other issues.

Q:What is the meaning of monitoring the camera mm?

Just a few mm words of the camera, usually refers to the lens of the focal length of the optical parameters.

Q:Monitor the camera focal length 3.6mm 4mm 6mm. What is the meaning?

Mm is the lens of the aperture, the number of millimeters, not the bigger the better, the smaller the camera according to the wider picture, the larger the lens the more narrow the picture clear

Q:What kind of outdoor security camera can see faces for 20 meters?

Questions from the original poster is more representative, ordinary people are generally have this question and requirements, but also to see have a parameters, such as can probably see it (just look at the face), and to clear the freckles on her face to see there is a big difference

Q:Panoramic camera monitoring distance is how many meters?

Lens is divided into a lot of kinds, common is 3.6 MM 6 MM to 8 MM, 12 MM, the closer distance with the smaller values of the lens, is the smaller the value, see clearly, because the personage inside course of study will be 3.6 MM wide Angle lens as large lens. The longer the distance the relative lens for example: the greater the value in monitoring scope of 50 meters, then apply 3.6 MM lens, if you use 8 MM lens, then you see the picture will be relatively far from the camera, the scope of monitoring can't satisfy the monitoring scope of 50 meters needs. [Ann as treasure 】 the camera.