What does the camera lens f1.0f1.2f1.4 mean? What is the difference? Specific point

The lens f1.0f1.2f1.4 in the surveillance camera refers to the aperture value of the lens.

Difference:

1, light absorption capacity

The smaller the F value, the greater the light absorption capacity, the larger the aperture value, the smaller the aperture, and the smaller the aperture value, so the aperture size is f1.0 > f 1.2 >f 1.4。

2, the degree of light and shade

F1.0f1.2f1.4, the brightness of the picture changes from bright to dark.

Extended data:

1, pay attention to moistureproof:

Humidity is the enemy of cameras. High humidity will lead to rust in the metal part of the camera, short circuit in the circuit part and mildew in the lens part. In extreme cases, water droplets will form on the surface of the drum. At this time, if the tape is placed, it will stick to the drum, and with the high-speed rotation of the drum, the tape and the machine will be damaged at the same time.

2. Pay attention to vibration prevention:

Vibration will have a bad influence on the mechanical part of the camera. At present, the mechanical parts of digital cameras are very precise, and the thickness of some mechanical parts is less than 0.5 mm, and the positioning accuracy of their guide posts is calculated in microns, so strong vibration sometimes causes mechanical dislocation or even circuit board looseness. Therefore, strong vibration should be avoided when using, especially to prevent the machine from falling to the ground.

3, pay attention to dust:

The camera drum is relatively small and has a high speed, especially for digital cameras, whose drum speed is as high as 9000 revolutions per minute. If the magnetic head meets the dust in the machine, it will sometimes be damaged. At the same time, the dust in the machine will cause the instantaneous blockage of the magnetic head, which will affect the quality of the captured image. Therefore, when using the camera, we should pay attention to dust prevention and try to avoid using it in high dust environment such as sandstorm weather.

4, pay attention to prevent electric shock:

If the connected equipment leaks electricity during the connection, it is easy to burn the camera during the connection, which may even lead to the scrapping of the camera! Therefore, it is best to connect the above equipment when unplugging the power plug, so as to avoid unnecessary losses.