Outdoor Surveillance Camera
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Why is the monitor lens rotten? Where is rotten?
- The Small factory optical processing capacity is poor, especially without aspheric mirror, so only by reducing the aperture to improve the optical performance, the general Japanese lens in the usual focal length, little less than 1.6, the small factory or less 1.6 lens usually aperture than 2.0 To be smalls
What is the standard for installation and monitoring of cameras?
- The outdoor height is four to five meters and can be adjusted for more than three meters according to the times
How to buy surveillance camera?
- Generally, the Angle of 3.6 mm lens can reach 75 degrees. The infrared distance of the face can be seen from about 0 to 5 meters.s
The 3.6mm and 6mm monitoring camera can see what the Angle is
- The 3.6 MM Angle is generally about 87 degrees and 6MM Angle is 60 degrees. The range of monitoring is different, and the distance is not the sames
The camera should be able to see the plate with a few millimetres of the plate.
- POMEAS provides monitoring of another lens focal length estimation, this only applies to more than 4 mm lens. For example, if the focal length of the lens (unit mm) is expressed in X, then the detail needs 2 * X, the outline is X, and the activity of the main body is X / 2. If you select a distance of 10 meters from the distance monitoring camera, you can see that the main activity selects the 5mm lens, the outline needs to be about 10mm, and the details need 20mm lenss
What is the meaning of monitoring the camera mm
- 10mm or so focal length, is a wide-angle focal lengths. Mainly for landscape photography, documentary photography, according to the angle of view is very large, very shocking about 24mm focal lengths, is a small wide-angle, mainly for landscape photography, documentary photography, travel commemorative photo with this focal length of about 50mm The focal length is about the standard focal length, which is mainly used for landscape photography, portrait photography, documentary photography and so on. It is the focal length. The focal length is mainly used for the portrait, still life and so on. Focal length, the focal length is often used to capture, close-up and so on about the focal length of about 500mm, is a long focal length, the focal length has been able to shoot birds and other superfluous 500mm super telephoto, birds more convenient, Super telephoto is often used in sports photographys
What is the focal length of the camera lens in the elevator
- The elevator lens is generally used in wide-angle lens, and the commonly used wide-angle lens is 2.8 mm and 3.6 mms
Monitor the camera range angle is not the bigger the better?
- The camera is similar to the SLR camera, and is arranged in the order of 2.8mm, 3.6mm, 4mm, 6mm, 8mm, 12mm, 16mm, 24mm and so on according to the size of the frame, according to the required monitoring range.s
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