The iris works by limiting the amount of light that hits the image sensor. Too little light can make everything dark, and too much light can make the image overexposed or washed out .
The MinIris and MaxIris values could be configured when the camera is mounted and installed in specific lighting conditions . Therefore, it’s important to have an iris that’s specifically suited for your camera’s location.
The MinIris and MaxIris values cannot be read-out from the camera.
Two fields: MinIris and MaxIris are missing from the Exposure node from the GetImagingSettingsResponse SOAP document.
Follow this article and find out the solution.