Comparison of NIKKOR Z 20mm f/1.8 S and Sigma 16mm f/1.4 DC DN Contemporary

Attribute	NIKKOR Z 20mm f/1.8 S ×	Sigma 16mm f/1.4 DC DN Contemporary ×
Diaphragm Blades Type	rounded	rounded
Notes	Dustproof and splashproof construction	Lens mounts: Sony E-Mount, Micro Four-Thirds, Canon EF-M. Dust- and splash-proof design; Lens hood (LH716-01) included.
Aperture (f)	1.80 - 16.00	1.40 - 16.00
Magnification Ratio (x)	0.19	0.1
Filter Size (mm)	77	67
35mm Equivalent	20mm	-
Type	Wide-angle prime	Wide Prime
Diaphragm Blades	9	9
Lens Construction	14 elements in 11 groups, including 3 ED elements and 2 aspherical elements; Nano Crystal Coating.	16 elements in 13 groups, including 3 FLD, 2 SLD and 2 aspherical elements
Image Circle	35mm (Z Mount)	APS-C
Focal Length (mm)	20.00	16.00
Brand	Nikon	Sigma
Name	NIKKOR Z 20mm f/1.8 S	Sigma 16mm f/1.4 DC DN Contemporary
Weight (g)	505	405
Diagonal Angle of View (degree)	94.00	83.20
Focus Details	STM (Stepping Motor)	Inner focusing with stepping motor
Diameter (mm)	84.5	72.2
Length (mm)	108.5	92.3
APS Equivalent	-	1.5x: 24mm; 2.0x: 32mm
Closest Focus (m)	0.2	0.25