Would anybody happen to know where I can get an instruction book/manual for the Canon EF 17-40mm f/4 L USM lens? Either by mail or on-line? Thanks!

RVsForFun: The 1 7 -40mm L lens is not "L" quality from all the posts I've read on the boards. Apparently Canon took the 16-35mm f/2.8 lens chassis and dropped a mediocre lens group in it, then called it an "L". The 16-35 f/2.8 is another matter altogether; it's great by all...