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
4 Point Star Lens Filter Canon Fd Lens Adapter Fd To Mft Adapter Sigma Canon Fd Mount Sigma Mount Converter Canon Fd To Nikonf Eos Fd Lens Adapter Fd Lens With Adapter Nikon5200 Fd Lens Adapter Sigma 75-300mm Fd Mount Lens Sigma Vintage 500mm Telephoto Lens Fd Mount
Camera Lens Barrier Filter Kit Sony Nex 5 Lens Mount Sony A7iii Battery Adapter Is Canon 6d Ef Mount New Sigma E Mount Lens Coco Ring Flash Adapter Nikon Sony Ericsson Elm Headphone Adapter Sony Scart Hdmi Adapter Sony Smartwatch 3 Adapter Buy Newest Sony E Mount Camera