The Kowa series - JCM-V - was created for use in environments subject to vibration and shock. Thanks to the design based on the JC1MS 2/3 "lens standard, the reinforced megapixel C-mount lenses are ideal for applications that require increased strength and high quality. All internal glass elements are covered with glue. A double-sided, reversible screw is used to lock the focus ring Replaceable shutter plates, which can be covered with glue, are used to select the size of the shutter.