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SM3D50D Iris Shown Threaded into
Our SM3 (3.035"-40) threaded irises are compatible with our Ø3" lens tubes and other SM3-threaded components. Each iris has internal SM threading on one side and external SM threading on the other side. The individual black spring steel leaves pivot within the outer ring of the iris and are designed for long-lasting performance over several thousand cycles.
The SM3D50D ring-actuated iris is designed for integration into confined setups, where the movement of a lever-actuated iris might be obstructed by other components. This iris also features a locking setscrew with a 0.05" (1.3 mm) hex for locking the ring during installation or removal.