D300S why not always use 51 points 3D tracking in AF-C ?

Started Apr 3, 2010 | Discussions thread
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ccarrier Senior Member • Posts: 1,020
D300S why not always use 51 points 3D tracking in AF-C ?

Hi everybody,

I just bought my D300S a week ago, upgrading from a D70. I have read my user's manual and done a few searches on the internet, buy one question remains.

When I use Continuous Autofocus (AF-C) what are the advantages of not using the 51 points 3D tracking ? Why shoud I use the 21 points, 9 points or single point ?

I suppose that there most be situations where these mode are preferabales or else they would probably not exists ?

From one of the searches I have made, one sentence I read seemed to suggest taht 9 points would be faster. (Then I suppose 21 points would be faster thatn 51 points ?).

Thank you in advance for your feedbak!

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Claude Carrier

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