Here are some basics to know before choosing a lens. Focal length and angle of view Full frame and APS-C A-mounts and E-mounts Lens names and model numbers The focal length extends from the center of ...

The lens in a camera is like an eye that lets light into the camera body and focuses it on the sensor, where the image is recorded. The larger the optical components (known as ‘elements’) in the lens, ...

The progression of CCTV in monitoring and control applications appears to be non-stop. In fact, it looks like we have reached a stage at which the role and growth of closed circuit television ...