No disagreement here....I am just of the opinion that fast lenses are best for sports and although you can get by quite nicely with f4 outside on great days, there may be times for indoor opportunities whereby the f4 just won't cut it.
When I shoot baseball outdoors my set up is usually a 70-200 2.8 IS on one 1dMarkII and on my other 1DMarkII, I have my 200 1.8 or 300 2.8. (the latter two on a mono)
Indoor basketball requires fast lenses and even the 2.8 in poorly lit gyms gets tricky unless you bump up the ISO, usually to the max. Other lenses I use for indoors are the 85 1.8 and the 135 2.0..........
Originally Posted by Bruce Painter
Just in case I was misunderstood I want to say that I do not disagree with the things that Bob said about the 70-200 IS lens. It is a great lens and the IS does work very well. It does what it was designed to do, allow slower shutter speeds without blur from camera movement. I have used the 70-200 IS and the 300 IS that belongs to my friend who I shoot sports for. I would have prefered the IS lens myself but I went from a Nikon film camera to Canon digital so I had to buy everything at once I just could not swing it all at one time. I also sometimes shoot basketball and vollyball in very poorly lit gyms with no flash and sometimes the f2.8 is really not fast enough for what I want.
In my first post I was not really trying to convince you that you have to have an f2.8 or that my choice is the best but to give you an extra option that falls between the two others both in price and what you get for that price.