There are 5 kinds of apertures for you to choose from to meet different requirements.
Small apertures of different diameters are provided in the optical system to meet different light requirements.
Compact and practical design make the diaphragm works more stable.
Change the diameter of the aperture by the handle.
If you are not completely satisfied with the purchase or the product,please do not hesitate to us in time, and we will solve the problem for you as soon as possible.