Comparison of Nikon 16-80mm f/2.8-4E ED VR DX AF-S Nikkor and Sigma 17-70mm f/2.8-4.5 DC Macro

Attribute	Nikon 16-80mm f/2.8-4E ED VR DX AF-S Nikkor ×	Sigma 17-70mm f/2.8-4.5 DC Macro ×
Notes	Image Stabilization (up to 4 stops correction). Included Accessories: Flexible Lens Pouch, Bayonet Lens Hood.	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Magnification Ratio (x)	0.22	0.43
Filter Size (mm)	72	72
Length (mm)	85.5	82.5
Closest Focus (m)	0.35	0.2
Diagonal Angle of View (degree)	20.00 - 83.00	20.20 - 72.40
Focus Details	Silent Wave Motor; Internal Focusing with AF/MF switch	Internal
Focal Length (mm)	16.00 - 80.00	17.00 - 70.00
APS Equivalent	24 - 120mm	1.5x: 25.5 - 105mm; 1.6x: 27.2 - 112mm
Brand	Nikon	Sigma
Image Circle	APS-C	APS-C
Name	Nikon 16-80mm f/2.8-4E ED VR DX AF-S Nikkor	Sigma 17-70mm f/2.8-4.5 DC Macro
Weight (g)	480	455
Type	Standard Zoom	Standard Zoom
Aperture (f)	2.80 - 32.00	2.80 - 22.00
Diaphragm Blades	7	7
Diaphragm Blades Type	rounded	-
Lens Construction	17 elements in 13 groups, with 4 ED and 3 aspherical elements; Nano Crystal Coat, Super Integrated Coating, Fluorine Coating	15 elements in 12 groups, including 1 SLD and 2 aspherical elements
Zoom System	Rotary	Rotary with lock
Diameter (mm)	80	79