The Canon 5D series of cameras, including the 5D Mark IV, 5D Mark III, and 5D Mark II, use the Canon EF lens mount.
This mount is compatible with a wide range of Canon EF and EF-S lenses.
Here are some key points about the Canon EF lens mount:
- EF stands for "Electro-Focus," indicating that the lenses have autofocus capabilities.
- EF-S lenses are designed specifically for APS-C sensor cameras, while EF lenses are compatible with both full-frame and APS-C cameras.
- The EF mount is a bayonet-style mount, meaning that the lens is attached to the camera body by twisting it into place.
