Pros and cons of each lens for portraits
With the 50L on a 1.6, it ends up 80mm, but wide open, does the 50L have issues.
With the 85L, would that be too long of a lens for portraits?
My vote would be the 85L, I think it is a great portrait lens, even on a crop body camera. Distance is a personal choice so it may not be for everyone. It depends on why your 50 1.4 or your 100 2.8 do not fit what you are looking for. My guess is if the 50 1.4 does not do what you want and the 100 2.8 is a tad too long, you will agree that the 85L is the best choice.
Just curious...what is your explanation for this? I would expect that the 85 1.2 would perform exceptionally well on a 7D.
I use the 85L on my 7D and think it is a great combo. Deciding to get this lens was difficult. I found very few examples shots from the 85L on a crop camera (Even fewer with a 7D) and many are quick to say it is best on a FF camera. At least in my opinion, it is very close if not just as good. It is all about knowing your tools, how to use them, and understanding the limitations. Yes, the DOF is not as thin....but at 1.2, even on a crop camera it can be very challenging. I have found it in some cases to be beneficial on a crop camera. Attached is an example shot at F2. I will put my flame suit on for the talented (but sometimes opinionated) audience members we have on the forum.