Used Canon EF 400mm f5.6 lens. Despite being an old lens, it shows little signs of wear. Optically it is excellent, and functions great. I have had no complaints with it and have used it for wildlife photography with great results.

Also included is a Canon EF 1.4x III extender, bringing the total focal length to 560mm, and the Canon Control Ring Mount Adapter EF-EOS R. The adapter allows you to use this EF style lens with the newer RF mount camera bodies, and has a built in control ring that can be used to adjust programmable settings, such as the aperture.