What does the term camera IRIS mean?

The camera IRIS is a mechanical aperture in the camera. By controlling its size, the exposure can be controlled, which is what we often call aperture.

The aperture composed of petal-shaped metal sheets is placed between the lenses inside the lens and can be enlarged or reduced to change the effective aperture of the lens, control the light beam entering the lens, and enable the photosensitive material to Get accurate exposure.

Automatic iris.

More detailed information is as follows:

The selection of manual and automatic aperture lenses depends on whether the illumination of the use environment is constant.

For situations where the ambient illumination is constant, such as in an elevator car, a closed corridor, or a room without direct sunlight, a manual aperture lens can be used, so that the system can be adjusted according to the environment during initial installation and debugging. According to the actual illumination, adjust the lens aperture size at one time to obtain a satisfactory brightness picture.