Specification Brand : Agatige BulletPoint : High-quality, accessories, household measuring high-definition measuring teaching tools, high-definition optical instrument accessories men women Stunent Stunents BulletPoint1 : NO ROM CONNECTION ON THE ADAPTER: Step-Up lens adapter ring focusing infinity, no ROM connection on the adapter. Diaphragm control of the lens is set manually. BulletPoint2 : STOP-DOWN MODE: M42-FD lens adapter 'stop-down mode' will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. BulletPoint3 : AUTOMATIC DIAPHRAGM: M42-FD M42 screw lens fotasy lens automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. BulletPoint4 : ADJUSTED MANUALLY: There is no electrical contacts in the adapter ring Automatic diaphragm auto-focusing or any other functions will not operated with using this adapter Exposure and focus has to be adjusted manually. BulletPoint5 : SATISFACTION GUARANTEE: All our product offer return policy or money back guarantee, if you have any problem about your purchase, pls communicate with us by Email, we are always here to make everything right for you. Color : default ExternallyAssignedProductIdentifier : 7618033578903 ItemName : Lens Mount Adapter, M42-FD M42 Screw Lens Fotasy Lens Rear Caps Adapter Step-Up Lens Adapter Ring for FD F-1 A-1 T60 Film Camera Adapter M42 Lens to EF Adapter ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters Manufacturer : Agatige ModelName : Zopsc0p18ihq9g2 ModelNumber : Zopsc0p18ihq9g2 PartNumber : Agatige1cangxb0qm ProductDescription : Features: Focusing infinity, No ROM connection on the adapter.Diaphragm control of the lens is set manually.Automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter.'Stop-down mode' will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. Made of stable alloy, long-term use is not a problem. Specification: Condition: Brand New Material: Plastic, Alloy Color: Black Compatible Camera: for FD Camera (A-1, AE-1 Program, F-1, FTb and others) Compatible Lens: M42 lenses (for Zeis, Penta, Praktic, Mamiy, Zeni) Weight: Approx. 30g