The Marshall V-4504ML is designed to be used with industrial cameras with automatic shutter function because the lens has a fixed iris. This is for 1/3-inch CCD (or CMOS) imager cameras with C-mount. This is a manual focus lens.
All Glass Optics
The V-4504ML is a small and inexpensive C-mount lens that does not sacrifice performance for value. Marshall is among the few companies that manufacturers these industrial lenses and they use all glass optical elements to produce high quality images.