Micro-Nikkor 105mm f/2.8 (AIS)

D850 @ x 0.41

This lens achieves a good central resolution at from f/4 - f/11. Quite good considering that this lens design dates back to 1983.

Resolution: This lens achieves a good centre resolution fro f/4 to f/11 but corners are a not so good but improve a bit by stopping down to f/11

Chromatic Aberration: Low fully open but increasing to moderate stopped down

Vignetting: High fully open but improving slightly stopped down

Macro Sweet Spot: f/8-f/11