Features:Color: blackMaterial: Aluminum AlloyAlthough the lens will fit physically, automatic diaphragm (AE metering), or other auto functions are not retained using this adapter.Both camera-side and lens-side of the adapter are made of brass, precision-machined and plated with chromiumPrecise fit and solid connection - lens has no play, gap or wiggling when mounted on adapter and no adjustments are required to fit your lens.Designed to reach infinity focus while maintaining the correct registration distance required to support CRC lenses or lenses with floating elements.Satin surface finish. Suit for:ForHasselblad HB V C / CF LensFor Can0n EOSR RF-Mount Full-frame cameraNote:Turn on 'shoot without lens' to use MF lenses with adapters.If your camera indicated "lens is not properly installed", please modify the camera menu settings.Usually called the release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manua What's in box:1 X Lens adapter ring _x000D_window.adminAccountId=254075701;_x000D_