1. The camera USM lens aperture assembly refers to the aperture mechanism of a lens equipped with Ultrasonic Motor (USM) technology. controls the aperture size of the lens, influencing exposure and depth of field. 2. Repair and fix your broken or unusable item with it. 3. Each item has been checked and in good condition before shipping. 4. Completely fit and work. 5. Professional installation is highly recommended. We will not be responsible for any damages to your camera that you may cause during the changing of replacement parts.
