The following are snapshots of the fog-transmitting lens and fog-transmitting camera. Does anyone know whether it is a lens problem or a camera problem? What is the problem?

The camera image appears distorted or geometrically distorted

This phenomenon may be caused by a problem with the geometric correction circuit of the infrared dome camera or monitor, or a problem with the optical lens, or it may be a video connection cable The characteristic impedance of the cable or device does not match the output impedance of the infrared dome camera.

When the above phenomenon occurs, please first check whether the optical lens used is abnormal and whether the input impedance switch of the monitor is set to the 75Ω end. Secondly, check whether the impedance of the video connection cable used is 75Ω.

Several black vertical or horizontal bars appear on the screen

This situation generally means that the ripple of the output voltage of the machine's power supply is too large. Filtering should be strengthened and good performance should be used. DC regulated power supply.

The image of the infrared dome camera using the automatic aperture lens is too dark

First check whether the EE/AI function switch is set to the AI ??end, and secondly check whether the LEVEL potentiometer is adjusted appropriately. .

The image quality of the infrared dome camera is not good

a. Check whether the lens has fingerprints or is too dirty.

b. Check whether the aperture is adjusted properly.

c. Check the video cable for poor contact.

d. Check whether there is any problem with the electronic shutter or white balance settings.

e. Check whether the transmission distance is too far.

f. Check whether the voltage is normal.

g. Check whether there is any interference source nearby.

h. Check to ensure insulation from interference when installing in the elevator.

i. Check whether the CS interface is connected correctly.

51 Security Forum contains a large number of analytical literature on camera issues for reference. I hope my answer will be helpful to you~