Canon EF 400mm f/2.8L lens in excellent condition and absolutely perfectly clean inside with no dust, fungus or scratches Works perfectly with every eos camera and adapts perfectly onto the Canon R mirrorless cameras This lens is old made in 1992 and it’s heavy but the optics are fabulous and it works flawlessly with the 1.4x extender for 560mm f/4 and works well with the 2x extender (although the auto focus is a bit slower) for 800mm f/5.6 The current version is lighter and has IS but costs $22,299 Look at some of the photos I’ve taken with this lens Only selling because I use my super telephoto zoom more often and I want to buy more RF lenses