Comparison of Nikon Z 24-70mm f/4 S Nikkor and Sigma 28-70mm f/2.8 EX DG

Attribute	Nikon Z 24-70mm f/4 S Nikkor ×	Sigma 28-70mm f/2.8 EX DG ×
Notes	For Nikon Z-mount; Dust- and drip-resistance	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Magnification Ratio (x)	0.3	0.23
Filter Size (mm)	72	67
Length (mm)	88.5	87.2
Closest Focus (m)	0.3	0.33
Diagonal Angle of View (degree)	34.30 - 84.00	34.30 - 75.40
Focus Details	Internal focusing with stepper motor; A/M switch	-
Focal Length (mm)	24.00 - 70.00	28.00 - 70.00
APS Equivalent	36 - 105mm	1.5x: 42 - 105mm; 1.6x: 44.8 - 112mm
Brand	Nikon	Sigma
Image Circle	35mm (Z Mount)	35mm
Name	Nikon Z 24-70mm f/4 S Nikkor	Sigma 28-70mm f/2.8 EX DG
Weight (g)	500	510
Type	Standard Zoom	Standard Zoom
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Diaphragm Blades	7	9
Diaphragm Blades Type	rounded	-
Lens Construction	14 elements in 11 groups, including 1 ED, 1 aspherical ED and 3 apherical elements; Nano Crystal Coat; Flourine coating on front element surface	14 elements in 12 groups, including 4 aspherical and 2 SLD elements
Zoom System	Rotary with locking retracting mechanism	Rotary with lock
Diameter (mm)	77.5	74