13 Low-Light Video Surveillance Tips to Enlighten Your Solutions
Check the Lens Speed
The speed of the lens is important. A datasheet will always quote the light level at a certain lens speed.
But dealers need to be careful because, for instance, sometimes a spec sheet will indicate a light level at f1.4 but the camera itself can only accommodate a lens at f2.
A fast lens is important and spending more money on the optics is critical, camera manufacturers say. Depending on how an integrator chooses to carve up his bill of materials, spending on the lens might be the most expensive part of their camera expenditures.
And if you put a slow lens on a camera, it doesn’t matter what is behind it because the lens is going to determine what information reaches the sensor.