IR camera issues at night

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  • We recently installed (10) Direct connect color outdoor dome cameras. The specs are:

    1/3" Sony super had ccd

    560TV lines

    NTSC/DUAL

    DC auto iris varifocal lens 2.8-12mm

    The image looks terrible at night and has some sort of haze in the center of the image. We have done at least 150 of these cameras before with no issues.

    We replaced them once already and the manufacturer has no idea what is going on.

    Does the manufacturer have soemthing to calibrate the setting? how much is the Lux for the camera?