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The Nikon Z 50mm F1.8 S is a powerful standard lens for the Z system, offering outstanding sharpness and full-aperture performance. There are better 50mm lenses on the market for portraiture, but none that are sharper or so well-corrected for coma and longitudinal chromatic aberration when shot wide open.
44 [Tested on 46 MP camera] Sharpness: 37 MP, transmission: 1.9 TStop, distorsion: 0.2%, vignetting: -1.6 EV, chromatic aberration: 2 µm. This lens’s sharpness is particularly impressive not just centrally, but across the whole image field.