FotodioX Pro Lens Mount Adapter B4 to Sony E Mount

The Fotodiox Pro Lens Mount Adapter B4 to Sony E Mount allows you to use available lenses that feature a B4 mount to fit on a camera body with a Sony E mount. The B4 mount is traditionally used on lenses designed to work with 2/3" 3-imager sensors. This is a lens mount adapter designed to attach to the lens itself, it is not meant to permanently adapt the mount of the camera. The adapter mounts to the lens and is removable, so you can use one adapter on many different lenses.

The adapter ensures the correct flange focal distance, so your infinity focus is maintained. Featuring Brass construction with a stainless steel finish, this adapter is a strong, durable unit. There is no electronic control of the lens through the adapter, so you need to use a lens that has manual focus and iris capabilities. However, the adapter allows TTL (Through-The-Lens) metering, and when using a lens with the adapter, the camera body should be set to either manual exposure or aperture priority mode.