Sharpness

Nikon AF-S 50 mm f/1.4G center	Nikon AF-S 50 mm f/1.4G edge
Nikon AF 50 mm f/1.4D center	Nikon AF 50 mm f/1.4D edge
f/1.4 f/2 f/2.8 f/4 f/5.6 f/8