AF Micro-Nikkor 200mm f/4D IF-ED
D850 @ x 0.41
Superb resolution for a autofocus telephoto macro
Resolution: Excellent from centre to corners from the maximum aperture of f/4.8 to f/11
Chromatic aberration: Moderate levels
Vignetting: Moderate-high at f/4.8 to f/5.6 becoming more modest stopped down further
Macro Sweet Spot: f/8-f/11