The leaflet-information on light sensitivity of CCTV cameras repeatedly leads to misunderstandings regarding the real quality of a camera when different types are to be evaluated and compared. As long as there are no standards for the measurement of „light sensitivity“ values it will generally be difficult to compare cameras and their quality based on this information.
Consequently the safest way to evaluate camera qualities is a practical comparison of different models. This method, which is a standard procedure at GEUTEBRÜCK, not only offers a direct analysis of the real light sensitivity, but also allows you to gather information regarding natural colour reproduction, picture sharpness, noise-response, etc.
You can see that many parameters can influence the measurement of light sensitivity and consequently the quality of a camera. The more parameters you have, the more efficient are the results in comparing different camera models. It is not only important to evaluate the light sensitivity of a camera but also to analyse its CCD-sensor and its type of digital signal processing. Working at its physical limits both criteria can cause signal distortions or stripes within the picture. Effects like „blooming“, „smear effect“ and „colour interpolation“ can be mentioned as important evaluation factors.
In the following you will find some typical data sheet information showing how much the value details can vary