SusanB

I have both the mark 1 and mark 2 versions. The mark 2 version is sharper across all focal lengths and out to the corners (especially @ 55mm!) and much lighter. Although it’s lighter the build quality is just as good. I’ve compared the zoom on both marks, and the mark 2 is quite smooth and even. I’m extremely happy with the new version and will be selling the mark 1.