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