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
Different Canon Lens Mounts Different Camera Lens Mounts Different Nikon Lens Mounts Different Types Of Lens Mounts 2 Different Canon Fd Mounts Different Types Of Canon Mounts Different Leica Lens Mounts Different Sony Lens Mounts Sony A7r Lens Mount Plastic Different Pentax K Mounts
Leica Q Lens B W Filter Sony G 18-105mm F/4 E-mount Lens Sony A7iii Fe Mount Sony Fz Mount Lenses Anamorphic Lens Adapter Sankor 16 D E-mount Lens To Ef Body Nikon To M43 Autofocus Adapter Pl Mount Adapter For Nikon Nikon Z Lenses On F-mount 55mm 1.4 Sony E Mount