kfconcept
There are two types of FD mounts
FD/FL Breech-Mount (with a silver ring, you need to rotate the silver ring when attachment and removal), breech-lock mounts are identified by the silver ring
New-FD Bayonet Mount, bayonet mounts are identified by a red dot next to the lens release button
Here are the steps to install breech-mount version
Operating the adapter
Canon Fd Lens Mount Adapter Mamiya 645 Lens Adapter Mamiya 645 Lens Mount Mamiya 645 To Nikon F Adapter Mamiya 645 To Pentax 645 Adapter Mamiya 645 Nikon Adapter Canon Lens Adapter For Mamiya 645 Mamiya 645 Pro Lens Mount Mamiya 645 Mft Adapter Mamiya Pentax 645 Adapter
Canon Fd To Minolta Md Adapter Nikon D3400 Wireless Adapter Tamron 24-70 G2 Canon Mount Olympus Pen Canon Lens Adapter Samsung Nx Mini Canon Adapter 1.33x Anamorphic Adapter Lens For Iphone 6 Eos Reverse Lens Adapter Panasonic Gf2 Lens Adapter C Mount Lens On Iphone Sony E Mount Sensor Cap