Comparison of Nikon 18-300mm f/3.5-6.3G ED AF-S DX VR Nikkor and Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM

Attribute	Nikon 18-300mm f/3.5-6.3G ED AF-S DX VR Nikkor ×	Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM ×
Aperture (f)	3.50 - 40.00	3.50 - 22.00
Filter Size (mm)	67	62
Notes	VR (Vibration Reduction) minimizes camera shake by offering a shutter speed equivalent to 4 stops faster	Image Stabilization; Available AF mounts: Sigma, Sony, Nikon, Canon and Pentax.
Closest Focus (m)	0.48	0.35
Magnification Ratio (x)	0.32	0.34
Zoom System	Rotary	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	27 - 450mm	1.5x: 27 - 375mm; 1.6x: 28.8 - 400mm
Diaphragm Blades	7	7
Image Circle	APS-C	Image Circle
Focal Length (mm)	18.00 - 300.00	18.00 - 250.00
Brand	Nikon	Sigma
Name	Nikon 18-300mm f/3.5-6.3G ED AF-S DX VR Nikkor	Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM
Weight (g)	550	470
Diaphragm Blades Type	rounded	rounded
Lens Construction	16 elements in 12 groups; including 3 ED and 3 aspherical elements	16 elements in 13 groups, including 1 Special Low Dispersion (SLD) and 3 aspherical elements
Diagonal Angle of View (degree)	5.30 - 76.00	5.70 - 69.30
Length (mm)	99	88.6
Diameter (mm)	78.5	73.5
Focus Details	Internal; AF-S "Silent Wave" motor with full-time manual focus override feature (M/A Switch)	Internal HSM (Hyper Sonic Motor) with AF/MF switch