| Joined: | Thu Apr 19th, 2012 |
| Location: | United Kingdom |
| Posts: | 4424 |
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I guess tha choice of 11point is for subjects that have limited differnt discernible reference points around the subject eg birds in flight.
I agree Eric that is seeming to work well provided the subject remains fairly central. With a flock of birds in the air perhaps use 24? I do think that up to a max of 11 points they have a lot more processing power than the outer points.
Good point about perimeter focus points processing power drop off. Gilbert also made a good point about the amount of effort taken out of AF speed using more sensors than necessary.
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Eric