>>3001159>>3001158>>3001146Stop stop stop.
Blind leading the blind here.
An FD lense won't move its aperture blades unless it's mounted on a camera.
Adapters to other cameras have a ring to switch between full aperture and stopped down to the selected one on the lense. On pic related it's the one marked Open and Lock.
turn it and you should be able to stop down.
If not, unmount and remount the lense with the lock ring in either position, until you get the right orientation to work the aperture.
