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Home Improvement - Security
Changing a 3mp camera lens

How to change a QSEE camera lens
3mp 1080 Camera
8mp 4K Camera

QSEE 1080P 3mp IP security camera model QNC8023B



The cameras come with M12 mount 3.6mm lenses.


If you don't have a toolkit like the one shown below you might want to purchase a kit simular beforehand. They can be bought online for under $20.



You start by removing the 4 2mm allen head screws holding the case together. Make sure to carefully remove them and place them in a secure place.




Now it;s time to remove the lens. There is a lock ring to hold the lens in position once focused. Loosen it before unscrewing the lens.





Be very carefull when you screw the new lens in. It is very easy to cross thread the fine threads on these lenses. I would start about 1/2 way down or less.

Next connect the camera to your security system. Once it's running you will have to manually adjust the focus by screwing the lens in or out. Once you have it close zoom in on the camera then fine tune it. You will want to set the focus to near the distance of the final object or area.

Clean the lens and both sides of the lens cover with a micro cloth to remove any fingerprints or dust.

Put the two halves of the case back together and all four screws.

Place the dust cap back on the camera and mount it in it's permanent location.

If you are unhappy with the focus you now know how to remove the lens cover and adjust the focus in place.