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 Mount Zeiss Lens C Fd Lens Mount Zeiss Lens X Mount Canon Ef-m Rf Adapter Zeiss C Mount Lens Zeiss F Mount Lens Zeiss Fd Mount Lens Zeiss L Mount Lens Zeiss Lens K Mount Zeiss M Mount Lens
Kood P Series Digital Camera Lens Filter Nikon To Canon Adapter Konica Minolta Lens Mount Samsung Nx100 Lens Mount Canon Cinema Lenses Ef Mount Canon Eos 1300d Lens Mount Jaray Nx Lens Adapter Pentax Mg Lens Mount Wedesr Autofocus X Mount Lens Nikon 50 1.2 Z Mount