Comparison of Nikon 18-55mm f/3.5-5.6G VR AF-S DX Nikkor and Sigma 18-50mm f/3.5-5.6 DC

Attribute	Nikon 18-55mm f/3.5-5.6G VR AF-S DX Nikkor ×	Sigma 18-50mm f/3.5-5.6 DC ×
Closest Focus (m)	0.28	0.25
Magnification Ratio (x)	0.31	0.29
Length (mm)	79.5	67.5
Front Element Rotation	-	-
Diagonal Angle of View (degree)	28.80 - 76.00	27.90 - 69.30
Focus Details	AF-S "Silent Wave" motor	Internal; HSM version available for Nikon mount
Focal Length (mm)	18.00 - 55.00	18.00 - 50.00
Aperture (f)	3.50 - 36.00	3.50 - 22.00
Brand	Nikon	Sigma
Image Circle	APS-C	Image Circle
Name	Nikon 18-55mm f/3.5-5.6G VR AF-S DX Nikkor	Sigma 18-50mm f/3.5-5.6 DC
Weight (g)	265	250
Type	Standard Zoom	Standard Zoom
Filter Size (mm)	52	58
APS Equivalent	27.5 - 84mm	1.5x: 27 - 75mm; 1.6x: 28.8 - 80mm
Notes	Image Stabilized. DX Nikkor for use with Nikon Digital SLR models only. Optional circular lens hood.	Available AF Mounts: Canon, Nikon, Minolta/Sony, Pentax, Four-Thirds, Sigma; HSM version available for Nikon mount
Diaphragm Blades	7	7
Diaphragm Blades Type	rounded	-
Lens Construction	11 elements in 8 groups, including 1 aspherical element	8 elements in 8 groups
Zoom System	Rotary	Rotary
Diameter (mm)	73	62