That's because unlike newer MILC (mirrorless) cameras the D850 [or any other Nikon DSLR for that matter] doesn't have 5 axis movement/vibration reduction/stabilization built into the camera/lenses, and on top of that the PDAF (Phase Detection Auto Focus) option is sketchy at best in most situations, and especially with subjects/targets moving at high speeds. The obvious alternative would be to use Manual [M] mode, which is way too slow, therefore that's not an option in the wild with fast flying birds/airplanes, running animals/people, or speeding vehicles. But the D850 has an advantage: it performs better with 3D tracking AF turned on than some of the mirrorless out there. In order to enable D850 eye/face AF these settings need to be selected + turned on, and some seem to help, at least in my experience ➜ [Custom Settings: Fine-Tuning Camera Settings]:
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FYI: This should work with all Nikon DX, D5xx(x), D6xx(x), D7xx(x) + D8xx series DSLRs + Z line MILCs (mirrorless). |
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