【Manual Focus】 No electronic contacts. Diaphragm control of the lens is set manually. Supports manual control, manual focus, manual exposure and focus to infinity; 【Unique Design】The appearance of the 4th generation lens mount adopts a twill knurled design, and the key points are treated with non-slip, making it easier and more comfortable to hold. On the other hand, the fine carving of CNC machining enhances the texture. 【Camera Mount】 Compatible for Sony E-Mount mount cameras, include Sony Alpha α7 I / II / III, α7R I / II / III / IV, NEX-5, NEX-5N, NEX-5R, NEX-5T, NEX-6, NEX-7, Sony Handicam NEX-VG10, NEX-VG20, NEX-VG30, NEX-VG900 cameras etc. 【 Material】High-quality copper and aluminum alloy ;High precision and durable, Install and remove smoothly; Matting varnish inside to avoid light reflection; 【Pre-purchase Verification】 Please ensure your lens mount and camera mount before purchase in case of unnecessary returning. We are here for help if you have any question about adapters. adapter