The moisture meter can quickly measure the moisture content of the grain. 1. The aperture can be adjusted manually depending on the available light level, it can also be fixed and locked for added convenience. 2. You can change the shooting range by changing the focal length, which is very useful when composing. 3. With low distortion, high compatibility, it can be customized for most security cameras. 4. The zoom lens can be used as multiple fixed focal length lenses, thus saving time when replacing lenses while traveling. 5. The lens adopts aluminum alloy body and lens, sturdy, durable and has a long service life. . TELEPHOTO LENS WITH CCTV ZOOM. MANUAL LENS . TELEPHOTO LENS WITH CCTV ZOOM. MANUAL LENS Specification: Item Type: Lens Material: Aluminum Alloy Color: as shown in the pictures Focal length: 5-100mm Relative aperture: 1:1,6 Interface: CS Phase specification: 1/3 inch Angle of rotation: 68°-1,8° Resolution: 1,3 MP Rear focal length: 6,75-17,5 mm Proximity distance: 0,3 m . TELEPHOTO LENS WITH CCTV ZOOM. MANUAL LENS . TELEPHOTO LENS WITH CCTV ZOOM. MANUAL LENS List of packages: 1 x Camera Lens with Zoom . TELEPHOTO LENS WITH CCTV ZOOM. MANUAL LENS . TELEPHOTO LENS WITH CCTV ZOOM. MANUAL LENS