The 70-200 is a great lens for sports, but....as mentioned above you probably won't like f/4 if you follow indoor sports. I have a 70-210 f/4 that I used alot with 800 film and always struggled with indoor lighting. Digital + ISO 1600 helps, but not as much as f/2.8 would (or a 200mm f/2)
That's why I'm torn, I figure he's 4, it will be years before he's into fast moving indoor sports, like basketball, so buy then who knows what might be available. The 70-200 f/4 IS interests me since it's IS is said to gain 3 f-stops, that should make up for a lot of good closeups at plays and school programs without having to crawl up front, and hunker with a flash.
, 135mm f/2.0



