The Tamron Lenses is available in both manual and DC auto-iris versions. The angle of view of this 2.2 mm lens makes it a significant product for monitoring of small and/or tight spaces like ATMs, prison cells, elevators and more. This super wide angle mono-focal lens features state-of-the-art optical design to solve the out-of-focus range between visible and near-IR light and delivers high quality and resolution. The size of the Lenses is perfect for mini domes that use a CS mount. The Lenses features locking mechanisms built into each ring and provides a built-in slip mount mechanism for precision installation.