In rereading Bryan's review of the 24-70 f/2.8 II, I was reminded that he actually had issues and returned a couple of copies of the 24-70 II. This helped me recall that Rick also sent a few versions back after testing.

What is the best way to test a new lens? I do own a copy of Reikan FoCal, which is what I believe Rick used. I've only used it to set my AFMA. I certainly want to make sure I get a good copy.

Thanks in advance.