Inside the D850 is the same 153-point autofocus (AF) system as is in Nikon’s flagship camera, the D5. This means that the centre point is sensitive down to -4EV while the remaining points are sensitive down to -3EV. Furthermore, 99 of the points are cross-type and therefore better able to detect a subject than linear points.
In continuous autofocus mode the
D850 can be set to use all 153 points, one point or groups of 9, 25 or 72. There’s also Nikon’s group-area AF and 3D-tracking.
We found the AF system extremely effective, getting quick-moving subjects sharp in low light. However, the smaller the area you can keep over the subject, the better the chance of getting it sharp.
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