Thank you for viewing. This is an adapter for using Contax G series lenses (28mm, 45mm, 90mm) on Sony E-mount cameras. Focusing is manual, using the focus ring on this adapter, not autofocus. (Please note that the 28mm lens may interfere with some cameras due to its protruding design.) This item is sold as-is, and all sales are final (no returns, no refunds, no exchanges).