SVBONY 1.25 0.5x Focal Reducer with C-Mount Adapter to to CCD Camera Broadband Green Coated Lens The 0.5x focal reducer is made of pure optical lens. And the lens is Broadband green coated lens, which increases light gathering ability and gets bright clear images Internal Threaded Design Threaded design in the barrel is friendly for users, which can minimize reflections and eliminate stray lights during strong light condition C-mount Adapter Adapt the focal reducer to a standard C-mount video camera Threads at the bottom of the c-mount adapter fit the threads on the focal reducer The threads at the top of the adapter fit the C-mount on your camera 0.5x Focal Reducer The 0.5x focal reducer fits into a standard 1.25 focus tube It will give you a much faster focus with larger field of view To CCD Camera for Telescope Eyepiece Photography and Observing Durable and Lightweight Fully metal construction is durable and good feeling; aluminum housing is sturdy and will last long time. 39g/1.38oz net weight will not be an extra burden for your devices Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store