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Wide-area AF assist

GeorgCantor

Potomac, US
138 posts

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"RE: Wide-area AF assist"

GeorgCantor Silver Member Nikonian since 09th Dec 2012
Thu 27-Dec-12 03:25 AM

"(b) expected" -- bah -- my bad! I said it backwards. I meant: AF-A starts as AF-S and becomes AF-C (if motion detected), as you said several times.

I'll try again. Suppose AF-A is set.

(a) If the SB-600 is NOT mounted, then, if AF-A remains in AF-S, the camera will act like AF area mode S has been selected. If AF-A goes into AF-C, the (manually) selected AF Area mode comes into play.

(b) If the SB-600 IS mounted, then, if AF-A remains in AF-S, the AF area mode acts like (or is?) is AF-S. If AF-A brings up AF-C, then the SB-600 will not provide AF assist (and probably will not bring up any AF area mode, either -- but that should be irrelevant). Anyway, as we said, for SB-600 AF assist, better to just use AF-S focus mode, and drum the shutter. The AF area mode manual setting then becomes irrelevant (as you said).

So, did I finally get it straight?

As I said I would check: with the SB-600 mounted on the D7000, it IS possible to set the camera manually to AF-C.

About using single frame shutter release.
You say that in continuous shutter release, the SB-600 recharge rate can be a limiting factor on the frame rate. I have noticed that effect in daylight sports shooting, using the SB-600 for fill, especially when the batteires begin to run down. But in AF assist for theater work, with AF focus mode = S & the SB-600 mounted & set to AF-assist, then if I am trying to shoot continuously, the SB-600 will not assist shot illumination; it only fires when I acquire focus by a half-press, so the SB-600 recharge rate only limits the frequency of focus acqusition, not the frequency of shots. So the SB-600 would not fire during the burst, only at the beginning, when I acquire focus. True?







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This is a hot, active topic! Wide-area AF assist [View all] , GeorgCantor Silver Member , Fri 21-Dec-12 02:07 AM
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