I am amazed that so many people tout the 24-70II as the next best thing to sliced bread. "Prime like!" Really? My 28 1.8, 35 IS, 50 STM, and 85 1.8 all turn in better performance than the zoom at the same/similar focal length, at some aperture. Admittedly, the 28 1.8 sucks in the corners. If I am shooting that lens at that aperture, I am going for close-range, thin as I can get it DOF. Who gives a FFA about the corners? The zoom is exceptionally good at 24mm, and deteriorates as you zoom to 70mm. At longer focal lengths, it is really good in the center of the frame. That may matter at f/2.8. If I'm stopping down to f/8 anyway, why pay $2200 for an f/2.8 zoom that can't resolve corners as well as a $300 consumer prime? I would not pay that kind of money to get a short-range zoom that sucks in the periphery of the frame, and is just atrocious in the corners.
To my mind, the 24-70II is a bundle of mediocrity. You can get several other zooms with IS. You can get several other zooms with more focal length range. You can do better than f/2.8 in a wide variety of much cheaper primes. Most of them are sharper than the zoom at several aperture settings. Compared to other zooms, it may well be the boss wrt sharpness. There is more to utility than 'better than other zooms' sharpness.
I have grown to prefer primes, mainly because they are lighter and force you to stay in that focal length for specific things. EG: Portrait and People photography, I have been guilty of shooting at 24mm on a zoom because I get caught up in the moment.
But shooting events such as a wedding, I tend to use zooms mainly. Only because you are always in a different situation and for me connivence and getting there quickly trumps anything else.
I disagree a bit about the 24-70 2.8 II. I think it's a good lens, although what I will say against it it is fairly bland... you get sharp images and it focus's well but that's about it. While it's sharp and works as advertised there is nothing special about it IMO but it does a good job. Whereas in complete contrast the 50mm 1.2 has it flaws at 1.2, but has a character that I really love. Sharpness is not everything, but the 24-70 is a good tool I think.





