Fotodiox Pro Lens Mount Adapter - Canon FD & FL 35mm SLR lens to Canon EOS (EF, EF-S) Mount SLR Camera Body, with Built-In Aperture Control Dial and Focus Confirmation Chip Premium Grade Fotodiox Pro Adapter with built-in Focusing Confirmation Chip and Built-In Aperture Control Dial Built-in Multi-Coated Glasses with 1.4x focal correction; Removable for Macro Photography (Instruction Link in Description) Enhanced craftsmanship and high-tolerance construction for demanding professionals Precision all-metal construction with chrome plated brass mounts for secure and solid fit 24 Month Manufacturer Warranty