I just want to let you all know that this lens is the best zoom that I have over owned, in term of sharpness.
Before you read on, please keep in your mind that I was using it at only f2.8. I have not tried it at any other apertures
Fist, let me compare it the the other zoom lens (only in term of sharpness and nothing else).
a.) It is much, much, much sharper than 24-105 at f4.
b.) It is much, much sharper than my 16-35 ii at f2.8. I have to shot the 16-35 ii at f4 to get the same results.
c.) It is noticeably sharper than my 70-200 f4 IS.
Second, let me put it again the primes that I own. I have two primes, the 50 f1.4 and 35 f1.4L I can not tell the difference between any of these lenses. At f2.8 they are all about the same.
Third, I got it for only $1970 with tax and shipping from amazon.
Remember guys this is my opinions only and that is all that it matters to me. It is the best $1970 that I have ever spend.
Congrats!

