I liked the glass on the d800, excellent in the center, sharpness, not very sharp on the target, due to the significant curvature of the depth of field, sharpness generally drops to 35 mm. If you shoot at 5.6 - 8, then everything will be fine. HA small. Many say that the AF speed is not super fast, but it is sufficient and does not cause inconvenience even on dynamic subjects, in any case it is faster than at 50 / 1.4G.
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