Comparison of Nikon 18-55mm f/3.5-5.6G VR AF-S DX Nikkor and Sigma 24-70mm f/3.5-5.6 Aspherical HF

Attribute	Sigma 24-70mm f/3.5-5.6 Aspherical HF ×	Nikon 18-55mm f/3.5-5.6G VR AF-S DX Nikkor ×
Closest Focus (m)	0.4	0.28
Magnification Ratio (x)	0.22	0.31
Length (mm)	76.4	79.5
Front Element Rotation	-	-
Diagonal Angle of View (degree)	34.30 - 84.10	28.80 - 76.00
Focus Details	Helical Focusing	AF-S "Silent Wave" motor
Focal Length (mm)	24.00 - 70.00	18.00 - 55.00
Aperture (f)	3.50 - 22.00	3.50 - 36.00
Brand	Sigma	Nikon
Image Circle	35mm	APS-C
Name	Sigma 24-70mm f/3.5-5.6 Aspherical HF	Nikon 18-55mm f/3.5-5.6G VR AF-S DX Nikkor
Weight (g)	285	265
Type	Standard Zoom	Standard Zoom
Filter Size (mm)	62	52
APS Equivalent	1.5x: 36 - 105mm; 1.6x: 38.4 - 112mm	27.5 - 84mm
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Image Stabilized. DX Nikkor for use with Nikon Digital SLR models only. Optional circular lens hood.
Diaphragm Blades	8	7
Diaphragm Blades Type	-	rounded
Lens Construction	9 elements in 7 groups, including 3 aspherical elements	11 elements in 8 groups, including 1 aspherical element
Zoom System	Rotary	Rotary
Diameter (mm)	69.5	73