I have about a couple of dozen Hikvision fixed-focus bullet cameras in service, mainly DS-2CD2032s and DS-2CD2042s and generally speaking they offer great performance for the money, but occasionally I get one that is not focussed too well and in the past I've opened them up, removed the blob of hot-melt glue tacking the lens into position and optimised the focussing. I've just got a DS-2CD2035 which is not focussed as well as the others and on opening it up I find that this lens appears to...
Hikvision bullet M12 lens focussing
Hikvision bullet M12 lens focussing