1, Material: optical glass, aluminum lens barrel 2, System composed of 4 groups of lenses 3, Good focusing and imaging effect 1, Material: optical glass, aluminum lens barrel;2, System composed of 4 groups of lenses. It's 6X zoom lenses;3, Good focusing and imaging effect. This system is suitable for the 3000W moving head.4, Production procedure5, More photos Stage Light 6X Zoom Lens Optical