Through this Adapter, Canon FD lenses can be used with Canon EOS SLR cameras. It fits on digital and analogue housings. The border of the adapter is very thin, but at the same time very sturdy in workmanship. Thereby, the infinity focusing (focus at infinity) of the connected lens remains the same. The aperture can be adjusted manually on the lens, thus your camera calculate the exposure in aperture priority. The focusing can be adjusted by you manually.
The Adapter fits exactly into the bayonet. It snaps into place securely and is easy to mount and demount. The stop screw avoids an overwinding.