Don't do it!!!!


Yes the f2.8 gives you one stop extra...but I always think bicycle shots, like motorsports, don't show much emotion and speed when you stop them. I really like the panning effect with bikes, so in that case you're gonna miss your IS a lot! I don't know about the 85mm...it doesn't have usm, so for sports?? I don't know.


I own the 70-200 f4L non IS, for a sportslens it is absolutely great, but if you want to use it elsewhere, the higher shuttertime to handhold it is a pain in the ass every time again.





17-55 by the way is really great! Although no weathersealing, so for sports...





Good luck with your choice :P