Tough call, then, to be honest. I understand your quandry. I'd still get the lens,even if you have to wait to get a newer 1D Mark II for a while. I am glad to know about the 70-200 f/4 + 1.4x is as sharp as the 70-200 f/2.8 at the same equivalent aperture. I have been lusting after a 70-200 f/2.8, but everything I've read leads me to think that if I'm not shooting AT f/2.8, I'm better off with the f/4.
What is "chimping"? Sorry for the newb question, but after all, that is what I am! A newb, that is. []