This adapter gives you the ability to use your irreplaceableprime lens with your new camera and saves you the cost ofpurchasing new lenses. Fotodiox 'Pro' Series adapters aremade with precision and pristine award standards to insure theperfect fit for your camera and lens and to endure professionaluse. There is No "play" between lens and Camera for asecure and the unique styling maintains/enhances professionalappearance. Automatic diaphragm, auto-focusing, and other functionswill not operate correctly while using this adapter as it is notelectronic. In this case, "stop-down mode" will need tobe used when metering since the lens does not have the ability tohave its aperture controlled by the camera body. Infinity focusingis guaranteed. The Fotodiox Pro Canon FD to Sony FZ lens mountadapter will fit all Canon FD Mount Lenses (FD & FL Lenses) toa Sony FZ Mount Camera such as the Sony PMW-F3/F5/F55 DigitalCinema Camcorders.