Actually my skills are somewhat limited, and I don't have the high dollar charts and equipment to test with that some of the forum members have. I do have a nice set of L lenses to compare to and my homemade charts, best of all Bryan's good info. As far as spending time testing, I kind of enjoy it.

I did some more comparisons tonight, I figured it wouldn't do any good to send it back until monday. The new 24-70 is giving near identical IQ and resolution as the 24mm f/1.4 L, the checks I did more checks after I posted this initially and the more I check they are neck and neck. I just picked up some supplies at Hobby Lobby and I am going to set up different home made targets.

I have always thought my 24mm L was an exceptional lens. I bought a TSE 24mm a year or so ago then returned it. My 24mm was sharper in the center and only slightly less sharp on the edges. I thought at the time that I had gotten a bad copy of the TSE. Now I wonder if I just have a really good copy of the 24mm f1.4 L.

But to your comments about someone without the ability to test buying this lens. Either of the 24-70 lenses I had were producing near prime quality. If a person had never owned a prime or just moved up to this lens, I think they would be very satisfied with even a model giving the lowest results. Going from an old 24-70 they would say "wow". For me I am just to picky.