Vacuum iris diaphragm
SKU : VIH
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◦ By sliding the adjustment lever, 12pcs diaphragm blades can be controlled and aperture will have a shape similar to a circular shape. By turning the adjustment lever, the aperture diameter can be fixed.
◦ The scale for aperture diameter is in the front of the holder.
◦ To minimize the outgassing, venting hole and grooving are provided onto screw holes and inset sections.