Fotodiox Pro Lens Mount Adapter - B4 (2/3") ENG Cine Lens to Sony E-Mount
The Fotodiox Pro Lens Mount Adapter is made entirely of metal, with chrome-plated brass mounts for a sturdy connection without play. This is a manual adapter: electronic lens functions such as autofocus, AE metering and image stabilisation don't work as a result. Thanks to manual aperture control, you meter the exposure yourself, for example via your camera's stop-down mode. If your lens doesn't have a physical aperture ring, the aperture defaults to its standard setting, either fully open or maximally closed, depending on the lens.
Please note: because B4 lenses are designed for 2/3 inch sensors with three image sensors, vignetting may occur when used on certain cameras or sensor formats.