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
Sony Aps C To Full Frame Adapter Fujifilm X Pro1 Canon Adapter Fujifilm X-pro1 Adapter Canon Fujifilm X-pro1 Canon Lens Adapter Fujifilm X Pro1 Lens Adapter Fujifilm X Pro1 M Mount Lens Adapter Fujifilm X Pro1 Nikon Adapter Fujifilm X-pro1 Leica Lens Adapter Fujifilm X-pro1 Lens Adapter Nikon Leica M Adapter For Fujifilm X Pro1
Sony E Mount Converter Canon Sony Wf-1000xm4 Airplane Adapter Canon To Canon Lens Adapter Novoflex Nikon Z Adapter Fuji Canon Cf Adapter Kodak Digital Camera Lens Adapter Minolta Mc Lens Mount Tamron Adaptall Lens To Sony E-mount Camera Minolta Xg-m Lenses Adapters For Digital Camera Fuji Adapter To Sony Battery