no, this price increase can't be justified if you use the lense for photography. mtf chart looks better than version I, but not $1100 better.
keep in mind that the version I is an excellent lens, also the 24-105 4.0 is.
@kautzy: Yeah, since I made my last post I have been heavily contemplating the 24-70 version 2's worth (at least to me). Also, yes, the version 1 and the 24-105 are still great lenses. I have the 24-105 but want to upgrade to a 24-70. My reasoning has led me to this conclusion: Since I actually don't really use my 24-105 all that much because I normally try to shoot with my primes wherever possible; it really doesn't make sense for me to drop the extra $1100 on the version 2
. When doing any job I always default to my 24, 50, and 85 L's when it counts and I wouldn't expect image quality of any zoom lens to come anywhere near the IQ of a prime
. So, now that I am past my temporary lapse of judgement, I have already ordered the version 1 to take advantage of the continued rebate
. I am still curious to see how well the version 2 performs though...