Kerry Pierce
Forum Pro
I've never used a 200-400, so have no idea how it will focus with any given camera. IMO, the d3 bodies will AF slightly better than the d300/d700. If the 200-400 is already a problem in low light, the d700 may not give you the performance you want.I would be using my 200-400 on the FX speed camera as I appreciate the zoom for soccer to help cover more of the field and a wider variety of players from one shooting position. I generally do not put a TC on it because it really knocks down the AF performance and I can notice some IQ degradation with the TC at 400mm (my 200-400 is tack sharp at 200) and I don't want to give up a stop of light. I would also like to get more background isolation with f/4 on FX and not give that back by using the TC.
If you're noise sensitive and want the absolute best AF in all conditions, I'd point at the d3s.
Yes, I agree completely. It's too bad that you & I don't live close. I'd let you borrow the d700 and d3s to see the difference. In all honesty, if you're thinking of spending the big bucks on the d3s or even the d3, I'd suggest renting both the d700 and d3s for a few days and testing them against one another. You may find that the d700 does what you need done at half the price of a d3s.Rental is probably a good idea once I have an idea of which I want to go for and I particularly need to make sure I'm OK with the range of the 200-400 on FX for how I shoot (or discover how I can adapt how I shoot to the different range).
good luck
Kerry
