The chrome C-Mount Lens to Micro Four Thirds Lens Adapter from Metabones allows C- mount lenses to be attached to a Micro Four Thirds format camera. Metabones adapters are quality made, using precision-machined brass with chromium plating on both the camera-body and the lens sides of the adapter in order to ensure smooth mounting, quality aesthetic, and durability. Although the lens will fit physically, automatic diaphragm (AE metering), or other auto functions are not retained using this adapter.