If the quality of security video depends on the quality of the camera that captures it, then how important is the lens that’s attached to that camera? Because all light and images captured by that camera are filtered through the lens, there’s an argument to be made that it’s the most crucial component of the entire system.
When it comes to lenses, talk of quality centers on two things: image quality and the quality of the lens itself. A low-quality lens will produce a low-quality image, which in many security applications is just not acceptable.