Hikvision Vari‐focal DC Auto Iris 8MP IR Lens  HV1140D‐8MP IR

● Vari-focal: This means the focal length can be adjusted, allowing you to change the field of view of the camera. In this case, the focal length can be adjusted between 11mm and 40mm.
● DC Auto Iris: The iris is the part of the lens that controls the amount of light that enters. A DC auto iris means that a motor automatically adjusts the iris size based on the lighting conditions. This helps to ensure that the image is clear even in low light.
● 8MP IR: This lens is designed for use with an 8 megapixel camera and is suitable for infrared (IR) light, which is useful for night vision.
Here are some additional specifications you might find useful:
● Mount: CS-Mount (a common type of lens mount for security cameras)
● Max Aperture: F1.4 (wider aperture allows more light in for better low-light performance)