The Manual Iris lens is the simplest type of iris control lens with manual adjustment to set the iris opening in a fixed position. These are generally used for fixed lighting applications or where the camera to be used is readily accessible. The lens is outfitted with a ring on the body that can be turned to alter the aperture directly. There are two types of Manual iris lenses, Fixed Manual Iris lenses and Vari focal Manual Iris lens.
The Manual Iris lens is convenient to use where it is not necessary to adjust the lens continuously for correct picture brightness. These types of lens are used with constant light. It is applicable in shopping centers, schools, libraries, and offices. The lens can be turned to alter the aperture directly with the help of a ring which is present on the body.
The Auto Iris Lens is a type of lens that can be electronically controlled. This type of lens allows maintaining the lighting level. It is applicable where the light condition varies continuously. Auto iris lens allows the camera to adjust to get the best picture in the given lighting conditions. There are two types of Auto iris lenses, Fixed Auto Iris lenses and Vari focal Auto Iris lens.
Auto iris lenses are best lens to use in any application as they are flexible and can adjust to changing light levels. Auto iris lenses are used to produce consistent video signals from cameras that view scenes in any varying light levels. Auto iris lenses combines an electronically controlled iris, which allows the lens to maintain one light level making them ideal for outdoor use or any other applications.
Manual Iris lens
Auto Iris Lens
A lens with a manual adjustment to set the iris opening is known as Manual Iris lens.
A lens with an electrically controlled iris is known as Auto Iris Lens.
This type of lens can only be used in fixed lighting condition. They are very common for full body cameras, and seldom seen on other camera styles.
This type of lens can be used from full sunlight down to near total darkness also. They are very common for full body cameras, and are sometimes offered as an option on other camera styles.
Adaptability of the lens
Manual Iris lens are inflexible as compared to Auto iris lenses.
Auto iris lenses are much more adaptable than manual iris lenses.
The lens is used in shopping centers, schools, libraries, and offices
The lens is applicable in locations outside the main door or gates, outside parking lot, or any other place where the lighting condition continuously changes.