EzFoto Tilt Contax Yashica C/Y Lens to Sony Alpha Nex E-mount Camera Adapter, for Sony NEX-3 NEX-5 NEX-3C NEX-VG10 camera This adapter allows user to connect Contax Yashica C/Y lenses to Sony NEX-5 NEX-3 NEX-VG10 cameras. It allows you to TILT your lens so it entirely changes the depth of field - a function previously available for users of expensive TILT lenses. Made of aluminum (camera body mount) anodized black, and brass (lens mount) chromed silver There are no electrical contacts in the extension tubes. Exposure has to be adjusted manually. Aperture control is not available if you use a lens which does not allow you to manually adjust the aperture (without an aperture ring). Compatible to Sony NEX-3 NEX-5 NEX-VG10 NEX-3C camera & Leica R lens Instruction: (1) There is a silver ring on the adapter. It is used to lock the angle of the lens. Pls rotate the silver ring clockwise direction, this will un-tighten the angle of the lens, (2) After setting the angle of the lens, pls rotate the silver ring anti-clockwise direction to tighten the angle of the lens.