My 50 already paid itself many times, I shoot for living (hence only 2 posts) and I couldn't care less for what charts say, or people that shoot brick walls and pixel pep over it. I remember the 70s & 80s very well since my dad gave me my first camera in 1974!!! Back there there was the 35, the 50 and maybe the 80ish and there was it...And lots of people still made lots of money with them.
It amazes me how many people bitch about the 50L without have never ever used one (not saying or implying it is your case) just because someone said somewhere that it was rubbish. The only reason I've decided to post about it, was to try to help iSY
Finally. Someone who shares my same sentiment. I have posted regularly in support of the 50L before but got tired of the rhetoric by one too many pixel peepers. I too use the 50L professionally. It is the lens I use the most on assignments as well as the lens I always take when I am traveling. It is nothing short of stellar. If you're seriously considering this lens, do the research yourself and you will find many happy users, most of which I can say are out shooting and not spending time bitching on forums.