You have limited yourself in this search. This lens was introduced in 1992 along with several other lenses. The following lenses all enjoy the same manual. Ef 200mm f/1.8L, EF 300 mm f/2.8L, EF 400 mm f/2.8L v. I & II, EF 500 mm f/ 4.5 L, and the EF 600 mm f/ 4L. I found it at "manualsink.com". Great lens for sports shooting, it's nice and light and quick. I like the lens for birds and anything else in motion.
