How accurate should one expect autofocus to be?

Started Mar 30, 2013 | Questions thread
Just a Photographer Senior Member • Posts: 1,368
Re: How accurate should one expect autofocus to be?


Another suggestion - try a multitude of different AF settings.   What worked on previous cameras may not be the best choice on a D800.    Might as well try 51-pt 3d and see if the face recognition tech in the camera works better than single point...

He is not using single point mode as he has set his camera to AF-C d9. Which means there are 8 active focus points around the selected middle focus point available, making 9 active focus points.

The camera can pick any of those 9 AF points and will then take the AF point with the greatest difference in contrast when he presses the shutter. This biggest contrast difference might be something else then the eye when pressing the shutter with moving objects.

Single point AF would probably work better for him and only if the subject moves in strange patterns (like birds or dancers) I would advise to use 51-pt 3d.

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