Function: The aperture diaphragm provides small holes of different diameters in the optical system to meet different light throughput requirements.
Aluminum Alloy and Stainless Steel: The camera aperture diaphragm is made of aluminum alloy and stainless steel for reliable performance and ruggedness.
Compact and Practical: This aperture diaphragm uses a compact and practical design, making the aperture diaphragm a more practical way to work.
Adjustable Inner Diameter: The aperture diaphragm has an adjustable inner diameter of 4.5 to 25mm, an outer diameter of 42mm, and a thread diameter of M36.
Easy to Operate: Change the diameter of the aperture diaphragm by the handle, very easy to operate in practice and friendly to novices.