Comparison of Nikon 18-200mm f/3.5-5.6G IF-ED AF-S DX VR Nikkor and Sigma 18-200mm f/3.5-6.3 II DC OS HSM

Attribute	Nikon 18-200mm f/3.5-5.6G IF-ED AF-S DX VR Nikkor ×	Sigma 18-200mm f/3.5-6.3 II DC OS HSM ×
Aperture (f)	3.50 - 36.00	3.50 - 22.00
Filter Size (mm)	72	62
Notes	Image Stabilization; Included Accessories: Bayonet hood (HB-35), Soft lens pouch (CL-1018)	Image Stabilization (up to 4 stops); Available OS AF mounts: Sigma, Canon, Nikon; Non-OS AF mounts: Sony, Pentax. Includes petal-type lens hood.
Closest Focus (m)	0.5	0.45
Magnification Ratio (x)	0.22	0.26
Diameter (mm)	77	75.3
Type	Standard Zoom	Standard Zoom
APS Equivalent	27 - 300mm	1.5x: 27 - 300mm; 1.6x: 28.8 - 320mm
Diaphragm Blades	7	7
Image Circle	APS-C	Image Circle
Focal Length (mm)	18.00 - 200.00	18.00 - 200.00
Brand	Nikon	Sigma
Name	Nikon 18-200mm f/3.5-5.6G IF-ED AF-S DX VR Nikkor	Sigma 18-200mm f/3.5-6.3 II DC OS HSM
Weight (g)	560	490
Diagonal Angle of View (degree)	8.00 - 76.00	7.10 - 69.30
Lens Construction	16 elements in 12 groups, including 3 aspherical and 2 ED elements	18 elements in 14 groups, including 1 FLD, 2 SLD and 2 aspherical elements
Zoom System	Rotary	Rotary
Length (mm)	96.5	87.7
Diaphragm Blades Type	-	rounded
Focus Details	Internal; AF-S "Silent Wave" motor with full-time manual focus override feature	Internal HSM (Hyper Sonic Motor) with AF/MF switch