The EF 17-40 f4L is an excellent multi-purpose optic, only that the extreme 17mm end can be difficult to work with from a compositional standpoint and its non-rectilinear design means verticals can give trouble once tilting the camera is introduced. It is not a digital lens (though it can be used on digital bodies), nor is it a recent lens, having been around for something like 10 years now. Contrast is strong and uniform across its range and in my long experience (since 1998) the best images are found at f8, but it also delivers wide open at f4. I have several friends who have seen the images I have had printed and framed (Ilfochromes) from this lens and have subsequently bought one.
I am not aware that digital-optimized Canon lenses in the EOS range will work on the film EOS bodies — due to the structure of the flange/bayonet, electronics and especially metering control.