What should I do if the security camera has a bad image quality?

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1 Check if the lens has fingerprints or is too dirty;
? 2 Whether the aperture is adjusted;
? 3 The video cable is in poor contact;
? 4 Is there a problem with the electronic shutter or white balance setting?
? 5 Is the transmission distance too far;
? 6 Is the voltage normal?
? 7 Is there a source of interference nearby?
? 8 Is the CCD of the trigger not flat?
? 9 Check whether the lens is a C-type interface or a CS-type interface. If the C-type interface must be connected with a ring, if it is a CS-type interface, the ring is removed.

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