While you can't get more FPS, on my D7000 there are ways to "increase the buffer" which might help:
I don't have a 600, but on my 7000 when I "feel the need for speed" or hear "you've lost that loving feeling", I change to 12 bit compressed and I get almost 20 images on a 45 mb card before I drop to 2 fps..
Also you could go "Trenchmonkey" and shoot jpg's (he'll give you his setting for a beer) and shoot almost as long as you want at the top fps if its like the D7000. Probably perfect for kids sports.
thanks! So I should be ok for sports. It'll help a ton in voleyball and basketball where I ned to shoot ISO 4000 to have f 2.2 - 2.5 an d get 1/640-1/800
I would think with volleyball it would be all about timing. 1fps, 10fps, shouldn't matter, you know can track the ball and can see when it's being spiked/dug, etc.
You know, I won't say there haven't been times I've used 9FPS, but for the most part a 5.5FPS burst during game action would really be enough for this sports shooter. I've shot beside people who machine gun all game long. To me, it's just a quicker waste of your shutter life and more time spent deleting images. I've used 9FPS for pitching sequences, for capturing a bike or ski/snowboard jump, and maybe the odd time for a batter's swing or slapshot "flex", but each time is planned. I don't generally shoot the game in CH mode... it leads to more "double shots" than I like, so I'm usually in single shot mode or CL.
Every shooter is different, but I sure wouldn't turn down a camera that does 5-6FPS with outstanding IQ just because it doesn't machine gun fast enough. YMMV. The D700 with grip is an excellent suggestion if you wanted more speed and a rugged build.
