Just wondering: would I get a better IQ and bokeh by using the Canon 135mm 2.0L with the 5d Mark II, or the 85mm 1.2L II with 60D? I already own the 2 bodies and the 85, do I really need the 135mm?
I've actually done this test, 5DII + 135L vs. 7D + 85L II (same sensor as 60D). For IQ, the 5DII+135L wins (sharper corners, less noise, much less CA, but more vignetting). For bokeh, the quality is about the same (and the quantity of OOF blur is the same for 85/1.2 on crop as 136/1.9 on FF, so effectively the same).
OTOH, the 85mm f/1.2 gives you something the 135L cannot - f/1.2 on a FF camera. DoF doesn't get much thinner than that, and the 5DII + 85L is a great combo!
Thanks. This helps a lot. I might get the 135mm later this year. Thanks to kubelik also for your input.