What is Auto and Manual Iris?
Auto Iris lenses are lenses that are able to change the size of their iris in accordance to its surrounding light condition. When the camera mechanism detect that there is insufficient light, the lens will automatically enlarge its iris to accommodate more light in so it could focus properly and produce images that are not too bright or too dark to see. It will do the reverse when it’s too bright. For outdoor applications, where the light conditions are constantly changing, auto iris lenses are needed. For indoor applications, where light conditions are constant most of the time, a manual Iris lens would be sufficient for the application. Manual iris lenses provide an effective solution for applications where the surrounding environment and its lighting conditions are relatively stable. It gives the best performance when used with cameras that are equipped with electronic shutters.
