I’ve been thinking for a while to glue it on the Canon 5d mark II…and that should tell you something!
It’s really the lens that you will reach in your bag more often that not, unless you shoot Nascar or Formula 1…
Scary sharp, contrasty, doesn’t know what the flare is even if you are shooting directly into the sun, easy to focus, not so bulky for beeing a macro lens.
All of this for 300 / 500 € street, depends in wich conditions you will find one and if from a private seller or from a shop.
There is also a cheaper version called C-Planar that goes only to 1:2 but with the same optic; if you are not interested in macro, or if you can appreciate the cut in weight and bulkiness, it may worth a look.