Comparison of Nikon 18-300mm f/3.5-6.3G ED AF-S DX VR Nikkor and Tamron 18-400mm f/3.5-6.3 Di II VC HLD (Model B028)

Attribute	Tamron 18-400mm f/3.5-6.3 Di II VC HLD (Model B028) ×	Nikon 18-300mm f/3.5-6.3G ED AF-S DX VR Nikkor ×
Aperture (f)	3.50 - 40.00	3.50 - 40.00
Filter Size (mm)	72	67
Notes	Image Stabilization (CIPA 2.5 stops); Available mounts: Canon and Nikon; Includes petal type lens hood; Compatible with TAP-in Console	VR (Vibration Reduction) minimizes camera shake by offering a shutter speed equivalent to 4 stops faster
Closest Focus (m)	0.45	0.48
Magnification Ratio (x)	0.34	0.32
Zoom System	Rotary (extending) with zoom lock switch	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	1.5x: 27 - 600mm; 1.6x: 28.8 - 640mm	27 - 450mm
Diaphragm Blades	7	7
Image Circle	Image Circle	APS-C
Focal Length (mm)	18.00 - 400.00	18.00 - 300.00
Brand	Tamron	Nikon
Name	Tamron 18-400mm f/3.5-6.3 Di II VC HLD (Model B028)	Nikon 18-300mm f/3.5-6.3G ED AF-S DX VR Nikkor
Weight (g)	710	550
Diaphragm Blades Type	rounded	rounded
Lens Construction	16 elements in 11 groups, including 3 LD (low dispersion) and 3 aspherical elements	16 elements in 12 groups; including 3 ED and 3 aspherical elements
Diagonal Angle of View (degree)	4.00 - 75.55	5.30 - 76.00
Length (mm)	123.9	99
Diameter (mm)	79	78.5
Focus Details	Internal with HLD motor	Internal; AF-S "Silent Wave" motor with full-time manual focus override feature (M/A Switch)