Laowa 100mm f/2.8 2x Ultra Macro APO
D500 @ x 0.27
This lens has good peak resolution at f/5.6
Resolution: This lens achieves very good central resolution at f/5.6 and f/8 with corners quite good too.
Chromatic Aberration: Low fully open but increase to moderate to high levels when stopped down.
Vignetting: Moderate levels
Macro Sweet Spot: f/8