This 2x barlow lens with metal body, the lens fully multi-coated provide a sharp view; it can double the power of any 1.25” telescope eyepiece, ideal for high power observation; a brass compression ring can protect your eyepiece from marring or scratching the barrel.SVBONY telescope camera adapter keeps the beautiful and interesting view of the telescope or microscope easily You can attach the camera to the telescope conveniently since using this SVBONY adapter combination You can also share with your friend or family through the camera screen;pictures and video which is available.The ring adapter can't auto focusing The adapter ring has no electrical connection and diaphragm and amp ocusing are required to be set by manual, suitable for canon EOS standard EF lenses.