How can light affect an IP Camera recording?
A network camera’s light sensitivity is often specified in terms of lux, which corresponds to a level of illuminance in which a camera produces an acceptable image. The lower the lux number, the better the camera is at capturing images in low light conditions. If a camera is specified to work down to 1 lux, it means that the camera can produce an image at 1 lux, but it may not necessarily be of high quality. Normally, at least 200 lux is needed to illuminate an object so that a good quality image can be obtained. Different manufacturers also use different references when they specify the light sensitivity of a camera, so it is important to look at captured images to make a comparison.
> Strong sunlight: 100,000
> Full daylight: 10,000
> Normal office light: 500
> Poorly lit room: 100
Lux is the amount of light falling onto a surface per square meter. Many natural scenes have fairly complex illumination with both shadows and highlights that give different lux readings in different parts of a scene. It is, herefore, important to keep in mind that one lux reading cannot be an indication of the light condition for a scene as a whole.
Some cameras offer a high dynamic range, meaning their performance isnt limited to a specific and limited range. This is good news for areas that you need to record which receive a low level of light in parts of the view and a large amount of light in another region, as seen below.