Up to this point, I’d been shooting the camera with the same autofocus settings I used on the D3 and D700 – which share the same CAM3500FX AF module. I think I just discovered why the AF system doesn’t seem to be as precise as before.
Previously, I used single point AF-S for static subjects, and 51-point dynamic 3D tracking AF-C for everything else. I could lock on with the center point, focus and recompose, and everything would be fine. It seemed like a good starting point for the D800.
Turns out I was wrong. Single point AF-C is MUCH more accurate and slightly faster than 51-point dynamic 3D. It’s solved a good number of my AF issues. Remains to try it out tonight when the light gets low to see if performance is improved under those conditions too. MT
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