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
E-m10 Mark Ii Lens Filter Canon M50 Mark Ii Adapter Canon 1dx Mark Ii Lens Mount Canon R6 Mark Ii Mount Canon M6 Mark Ii Adapter Canon R6 Mark Ii Adapter Canon 7d Lens Mounts V-e1 Adapter For Canon 7d Mark 2 Lens Mounts For 5d Mark 2 Sony Dxc 325 Digital Adapter
55mm Kalimar Uv Haze Filter Lens Canon Ef Mount 50mm Sigma 10-20 Sony E Mount Sony E Mount 24-70 F4 Pentax Reverse Lens Adapter Sigma Fe Mount Zoom Lens M42-objektiv Nikon F Adapter Smc Pentax-m 50mm 1.7 Mount Iphone Adapter For Sony Dock Tussenringen Sony E Mount