agv8or wrote in post #15029843
In reality my 5+ year old 24-105L is still a great lens and I do not see myself replacing it anytime too soon with any of the current offerings of 24-70 f/2.8 lenses which is what I replaced with it in the first place. It has performed great all these years on a 5Dc, 5DmII and now on a 5DmIII I am even more impressed with it. The new 24-70L II my be slightly overall sharper and have better contrast but in reality the 24-70L II does not have IS nor can it go from 71-105mm both of which are more important to me. In reality most people are not going to be able to tell whether an image was shot with a 24-105L or a 24-70L II. In reality the lighter weight, larger focal range and image stabilization of the 24-105L will prove more useful, to more people on a daily basis, than the f/2.8, sharpness and contrast of the 24-70L II. In reality the vast majority of people will buy the 24-70L II simply because they want the best that Canon has to offer at this time and the vast majority of those individuals will still lack the ability and talent to create a better image with the 24-70L II than what they could have created with a comparable lens costing half as much. That's the reality of it!
This is pretty much my take but I do think there is more to it then what's on paper. Yes its just 1 stop faster but I feel the old 24-70 just produced slightly better photos. Maybe its the combination of better contrast, better bokeh etc. I only sold mine because I felt it was to bulky and I hated the reverse zoom, mine was a bit clunky and it would get tight at the wide end and loose at the long end. Just an awkward lens to use. The Mark II seemed to address this.
That being said I would think for many it would be hard to justify the cost difference between the 2. Even 2.8 will require flash at times and that further negates the difference IMO. 24-105 can be purchased for about 1/3 the price so why the 24-70 maybe better, the 105 is really an outstanding value but again its a subtle difference and in photography getting something slightly better can get very expensive.
(50 1.4 to 50L, 85 1.8 to 85L, 17-40 to 16-35 just to name a few)