This Canon EX 125mm f3.5 lens is not compatible with FD cameras, EOS cameras, LTM cameras, or anything else that Canon ever made- except for the Canon EX, which was, as one website puts it, “a short series leading to a dead end.”So I don’t recommend investing your savings in Canon EX futures, but if you already have a Canon EX and you’d like a longer lens, this 125mm f3.5 lens is in excellent condition, and it’ll give you the extra reach you crave. Includes front and rear caps.