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

Attribute	Nikon Z 24-70mm f/4 S Nikkor ×	Sigma 28-70mm f/2.8 DG DN Contemporary ×
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Filter Size (mm)	72	67
Notes	For Nikon Z-mount; Dust- and drip-resistance	Available AF Mounts: L-Mount, E-Mount; Dust- and splash-proof at lens mount
Closest Focus (m)	0.3	0.19
Magnification Ratio (x)	0.3	4.6
Zoom System	Rotary with locking retracting mechanism	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	36 - 105mm	42 - 105mm
Diaphragm Blades	7	9
Image Circle	35mm (Z Mount)	35mm
Focal Length (mm)	24.00 - 70.00	28.00 - 70.00
Brand	Nikon	Sigma
Name	Nikon Z 24-70mm f/4 S Nikkor	Sigma 28-70mm f/2.8 DG DN 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 12 groups, including 2 FLD, 2 SLD and 3 aspherical elements; Super Multi-Layer Coating, Nano Porous Coating.
Diagonal Angle of View (degree)	34.30 - 84.00	34.30 - 75.40
Length (mm)	88.5	101.5
Diameter (mm)	77.5	72.2
Focus Details	Internal focusing with stepper motor; A/M switch	Internal focus with stepping motor; AF/MF switch; Supports DMF, AF+MF on Sony cameras