The lens iris opening is automatically adjusted to allow the correct illumination of the camera sensor. With direct drive or DC Iris lenses the camera controls the size of the aperture. Video iris lenses have the control circuits built into the lens.

Security cameras with auto iris, have the ability to compensate for large variations in light levels. This is useful for security cameras that need to adjust for changes from bright sunlight to darkne [..]

A kind of iris, is used to adjust the amount of enter light, electrically controlled by the camera.

The iris controls the aperture size, which determines the amount of light that passes through the lens to the image sensor. An automatic iris is automatically adjusted to produce the proper image expo [..]

Automatic method of varying the size of the lens aperture in response to changes in light. This is a function of the lens or the camera

A lens in which the aperture automatically opens or closes to maintain proper light levels on the faceplate of the camera pickup device.

A lens which allows the opening of the lens to automatically open or close to maintain proper light levels

A device in the camera lens that self-adjusts to light level changes. The Iris opens and closes to control the amount of light passing through the lens to reach the image sensor.

This special type of iris is electrically controlled by the camera, to automatically regulate the amount of light allowed to enter.

A special camera lens with the ability to open or close its iris automatically in response to changing light levels.