Comparison of Nikon Z 24-70mm f/4 S Nikkor and Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM Contemporary

Attribute	Nikon Z 24-70mm f/4 S Nikkor ×	Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM Contemporary ×
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Filter Size (mm)	72	72
Notes	For Nikon Z-mount; Dust- and drip-resistance	Image Stabilized (up to 4 stops); Available AF Mounts: Canon, Nikon, Sigma, Pentax, Sony; Accessory: lens hood LH780-03.
Closest Focus (m)	0.3	0.22
Magnification Ratio (x)	0.3	0.34
Zoom System	Rotary with locking retracting mechanism	Rotary with lock
Type	Standard Zoom	Standard Zoom
APS Equivalent	36 - 105mm	1.5x: 25.5 - 105mm; 1.6x: 27.2 - 112mm
Diaphragm Blades	7	7
Image Circle	35mm (Z Mount)	APS-C
Focal Length (mm)	24.00 - 70.00	17.00 - 70.00
Brand	Nikon	Sigma
Name	Nikon Z 24-70mm f/4 S Nikkor	Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM Contemporary
Weight (g)	500	470
Diaphragm Blades Type	rounded	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	16 elements in 14 groups, including FLD, SLD, and 3 aspherical elements
Diagonal Angle of View (degree)	34.30 - 84.00	22.90 - 79.70
Length (mm)	88.5	82
Diameter (mm)	77.5	79
Focus Details	Internal focusing with stepper motor; A/M switch	Internal, with Hyper-Sonic Motor; AF/MF switch