So my recent foray into concert photography yielded some interesting observations, primarily that aperture is everything if you're in low light and don't want to crank ISO, and you can deal with shallow DoF.
My go-to lens has been the 24-120 f/4, and it's a fine fine lens, but man I hate noise and am wondering if I might benefit from the extra full stop of the 24-70 f/2.8.
I found that I rarely needed the extra reach of the 120; with my backstage access if I did need to get closer, well, then I just stepped closer!
Considerations:
-Focus speed and accuracy. How's the 24-70 compare the the 24-120? I find the 24-120 focuses as fast as I need.
-Aberration/Distortion. The 24-120 does a pretty good job of minimizing aberration and distortion (at least to my eye), and the correction filters built into LR solve whatever problem might develop. How's the 24-70 on this subject?
-Cost. The 24-120 is paid for. It's a sunk cost, and essentially free at this point.
-Usability: The 24-120 ain't a feather, but it's not too cumbersome once you get used to it (25 oz.). The 24-120 is about 5.5" at 120 mm, and about 4" at 24mm. The 24-70 seems to be about 32 oz. Length is a hair longer, but change in barrel length across focal length is smaller.
Cost looks to be about twice what I have in the 24-120.
For those of you that have both, what's your opinion?