35mm f/1.4L vs. 70-200mm f/4L IS

[saturnia]

if I could only have one I would pick a Canon's top prime in that lens range over a Zoom of any other range

Well, I am prime fan, too, but if it comes down to the 70-200/4 IS I'd say it is so sharp that it meets the quality of a good prime. Only my EF 100/2.8 IS beats it in terms of sharpness in that range of focal lengths - but that's a macro and certainly one of Canons sharpest lenses.

[scalesusa]

It won

[saturnia]

Well, you only could use the 70-200/4 with slowly moving objects indoors. Its IS is very good but it is not fast, indeed. I never use mine indoors, if I then need such a tele zoom range I use a Tamron 70-200/2.8. But I