CIYISON M30–M37 Adjustable Iris Diaphragm 1.5–26mm Camera Lens Module

CIYISON adjustable iris diaphragm with a 1.5mm–26mm aperture range (maximum aperture 26mm) provides high light transmittance for clearer, brighter imaging in low-light conditions without relying on external illumination. Unlike fixed small-pin apertures, this variable iris offers far greater convenience and flexibility. Its wide dynamic adjustment lets a single unit cover many shooting or inspection scenarios, removing the need to carry multiple aperture sets. The outer housing is metal for solid structural support and durability, protecting internal components and extending service life. The compact, practical construction enhances diaphragm stability during use. Aperture size is changed via an integrated handle for simple, on-the-spot adjustments; lightweight and portable, it makes a useful laboratory accessory compatible with M30 to M37 camera/lens mounts.