I was scared as well when I saw the annoucement of the weight, all the more so as I really don't shoot that much on a tripod, and looked to this lens t be my walk-about gear. But, upon trying it, I still decided to order it; It is not that bad, actually, on my 5DII. And it is not "only" at f:1.4 that it shines. Some ultra-fast lenses seem to give away IQ stopped down in favor of wide open performance, but this one does not seem to be that way. It is at least as good as the 35 f:2.0 in all cases, including at infinity and stopped down, and really outperforms it close to wide open, which just opens new shooting opportunities for me. At least, when Mssrs Zeiss will be good enough to ship me one, because, while I ordered mine a year ago, I see pictures appearing everywhere on blogs, but my lens is still unavaiable...