100-400L IS or 400 prime for sports?

[steved110]

Originally Posted by Lord_Malone

Man. Damn nice shot. It just became my desktop wallpaper.

Great avatar Lord_Malone! Y'all got some Billy Bob teeth too, I see. I like em so much, I have 2 sets....
Just never grew up.....

[Lord_Malone]

Originally Posted by steved110

Great avatar Lord_Malone! Y'all got some Billy Bob teeth too, I see. I like em so much, I have 2 sets....
Just never grew up.....

Actually, I've got the "Big Cletus" teeth. Brought to you by the same folks who brought us the Billy Bobs.

[DavidEB]

A dissenting opinion -- shooting sports with an f5.6 lens is not a great choice, unless you're sure you're going to have great light at every event. I'm thinking about it for surfing, but for most field events (baseball, soccer, etc...) you really benefit from aperature, because you need a fast shutter to freeze the action. Also, I've found few sports where a lens longer than 300 is really needed. If you need something longer than a 70-200 for your action, I'd vote for the 300 f4, the sigma 100-300 f4, or (best if you can afford it) the sigma 120-300 f2.8.

Putting a teleconverter on a 70-200 is OK but slows the autofocus enough to make sports shots difficult.