Comparison of Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX Nikkor and Sigma 28-105mm f/2.8-4 Aspherical IF

Attribute	Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX Nikkor ×	Sigma 28-105mm f/2.8-4 Aspherical IF ×
Notes	Image Stabilization. DX Nikkor for use with Nikon APS-C digital SLR models. Included Accessories: HB-32 Bayonet lens hood, CL-1018 Flexible lens pouc	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Magnification Ratio (x)	0.2	0.18
Filter Size (mm)	67	62
Length (mm)	89	79.5
Closest Focus (m)	0.45	0.5
Diagonal Angle of View (degree)	15.30 - 76.00	23.30 - 75.40
Focus Details	Internal; AF-S "Silent Wave" motor	Internal
Focal Length (mm)	18.00 - 105.00	28.00 - 105.00
APS Equivalent	27 - 157.5mm	1.5x: 42 - 157.5mm; 1.6x: 44.8 - 168mm
Brand	Nikon	Sigma
Image Circle	APS-C	35mm
Name	Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX Nikkor	Sigma 28-105mm f/2.8-4 Aspherical IF
Weight (g)	420	405
Type	Standard Zoom	Standard Zoom
Aperture (f)	3.50 - 38.00	2.80 - 22.00
Diaphragm Blades	7	8
Diaphragm Blades Type	rounded	-
Lens Construction	15 elements in 11 groups, including 1 ED and 1 hybrid aspherical element	12 elements in 11 groups, including 1 aspherical element
Zoom System	Rotary	Rotary
Diameter (mm)	76	77