I've decided my next lens is going to be a Canon 16-35mm, but just as I had about set my mind on the 2.8II, they announce the 2.3III. There is however a hefty price difference although as discussed elsewhere on the forum this would probably reduce over time.
However, looking at reviews, they seem to suggest part of the advantage of the new version is that it should exceed the old version "as the F4 has already done".
So does anyone have any experience with the F2.8 and F4.0 and if so, is it worth spending more for the current F2.8? I appreciate the extra stop (although the F4.0 is stabilised), but would anyone adamantly argue in favour of one over the other?
However, looking at reviews, they seem to suggest part of the advantage of the new version is that it should exceed the old version "as the F4 has already done".
So does anyone have any experience with the F2.8 and F4.0 and if so, is it worth spending more for the current F2.8? I appreciate the extra stop (although the F4.0 is stabilised), but would anyone adamantly argue in favour of one over the other?