Low-Light Focus Issues: Please advise
Apologies in advance...I'm sure I could sort this out myself given more time, but I have another shoot coming up and could use some help sorting this out quickly.
I've been experiencing problems focusing at dusk on a moving (sometimes not moving) subject using a D700 and 2.8 lens.
This latest shoot I was holding the camera with one hand and flash out to the side with the other, using CLS to control the flash. Half the images were out of focus. I tried single shot mode (S) and continuous (C).
Equipment at my disposal: SB-900, SB-600, SU-800 (IR controller).
Problem I need to solve: Using CLS to fire off-camera flash, (1) what are the best autofocus settings, and (2) what is the best equipment combo to achieve focus?
I believe the SB-900 can be used as a focus assist, but I don't know how to control the off camera flash if the SB-900 is in the hotshoe.
Here is one of the better shots from this weekend to give you an idea of the problem I'm trying to solve. I blew a bunch of shots getting to this one.
Thanks in advance for your help.
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#1. "RE: Low-Light Focus Issues: Please advise" | In response to Reply # 0blw Nikonian since 18th Jun 2004Mon 31-Aug-09 11:53 PM
If you can use AF-S, you can exploit the AF assist capability of the SB-800/900. This assumes that you're not too far away, but in the shot you show, it looks to me that you're well within the range of the AF assist. Set the camera to AF-S (AF assist doesn't work in any other mode), and put the SB-900 in the hot shoe. Set the SB-800 as a remote, and set the SB-900 to commander mode, with the same channel. This allows you to control the remote from the SB-900 (you can set the remote's exposure mode - auto, TTL, manual, etc - as well as flash compensation per group). I'm pretty sure you can do this with the SU-800 in the hot shoe and both the SB-900 and SB-800 as remotes. You still need to figure out how to aim the remote(s), but other than that, this set up should handle your problems.
Brian... a bicoastal Nikonian and Team Member
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