Prakticar PB mount Lens to Canon EOS EF mount adapter - 5D III 6D 70D 700D 650D 7D small camera accessory Blade of diaphragm: 14

Blade of diaphragm: 14

and shift adapters

You can use this adapter with G lenses for wider use of Nikon lenses

Electronic

72x optical glass lens adapter for using Fujifilm X mount APS-C digital cameras with Canon EOS EF mount lenses

Prakticar PB mount Lens to Canon EOS EF mount adapter - 5D III 6D 70D 700D 650D 7D small camera accessory Blade of diaphragm: 14New Praktica PB lens to Canon EOS body mount adapter . The lock can fix the position of the lens on the adapter. If the lock is not present (other seller selling another version of PB to EOS adapter without lock), the lens will be easy to be detached from the adapter during turning the focusing ring. It can also provide "focus to infinite" availability Focus infinity , made by copper