Just recieved mine last friday. Took about 3 shots to fall in love with it. Shot a wedding on sat. Wanted to use it a lot but was worried about the focus I was getting at 1.2. And I have glass to use for 50mm so inbetween locations I did some test shots and manually adjusted the amfa by using the compare screen on the 5d3. At full zoom I decided -6 looked best. After that and a few test shot I felt comfortable using itfor the rest of the night . I did take 3 shots each time at 1.2 to maximise the turnout potential. Sure many of them were soft but the ones that locked on look fabulous. I haven't taken it off since. The balance on a gripped 5d3 is perfect. I agree the shapness is not there esp compared to the new mk2 zooms but the look of the pictures is unlike any lens I have. The 1.4, to me had no special qualities. The 50L is just bada$$. But now im sure ill wake up in a day or 2 to see the announcement of the mk2....
