About as good as it gets, unless we compare to the newer version II! Sharp, fast AF, good handling, rock solid build quality, affordably available used, excellent IS. One of the best made by any manufacturer. In light of the newer lens, this one is heavier and the IS probably isn't as good, but the price of the new is extremely high and while it may be sharper ultimately, I cannot justify the expense given just how good this lens is.
Canon EOS-1D X
Telephoto prime lens • Canon EF • 2531A002
Oct 18, 2012