Adjustable Iris Aperture Diaphragm Adapter Ring

This is an adjustable iris aperture diaphragm adapter designed for lenses with M30 to M37 threading. It allows precise control of light entering the lens, with an aperture range from 1.5mm to 26mm. The adapter is suitable for use with various optical modules and provides a secure fit for compatible lenses. It includes a protective cover set to help safeguard the diaphragm and lens components. The design ensures easy installation and adjustment, making it useful for applications requiring fine light control and protection of optical elements.