Beware of Spec Sheet Claims
As noted, some manufacturers will make astronomical claims about their cameras’ low-light sensitivity and put it in their spec sheets.
“A lot of them are simply reporting sensor specifications as opposed to true camera performance. A sensor spec is only going to tell you the minimal light level in which the sensor can obtain some sort of image definition, but realistically, a camera performing with any sort of reliable image at 0.00001 lux is near impossible,” explains White.
The key criterion for integrators is to isolate on finding a camera that can deliver surveillance-quality video under the minimal illumination situations.
Bosch, for example, has demos set up at its facility along with comparisons. Most integrators will want samples they can bench test on their own.