Features:Attach your telescope's lens to for Olympus mirrorless camera, Micro4/3 G1 GF1 EP1 cameras. The lens lock / release button, ring lock, are capable of infinitely far focusing. Fit for Olympus mirrorless cameras, Micro 4/3 G1 GF1 EP1 DSLR series. Cannot use autofocus function after using this adapter ring, only manual mode or aperture priority mode are usable. Connect the the adapter to lens first, and attach the lens to the body, very convenient and fast installation. Specification:Condition: 100% Brand NewColor: blackMaterial: aluminum alloyCrafts: CNC precision workThread: M42 x 0.75mmMount: for OlymousDimension: approx. 60 x 25mm / 2.4 x 1inWeight: Approx. 66gPackage List:1 x Adapter ring(Lens and camera are props).Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.