Comparison of Nikon 18-200mm f/3.5-5.6G IF-ED AF-S DX VR Nikkor and Tamron 28-200mm F/2.8-5.6 Di III RXD (Model A071)

Attribute	Nikon 18-200mm f/3.5-5.6G IF-ED AF-S DX VR Nikkor ×	Tamron 28-200mm F/2.8-5.6 Di III RXD (Model A071) ×
Aperture (f)	3.50 - 36.00	2.80 - 22.00
Filter Size (mm)	72	67
Notes	Image Stabilization; Included Accessories: Bayonet hood (HB-35), Soft lens pouch (CL-1018)	Available mounts: Sony E-mount; Moisture-Resistant Construction.
Closest Focus (m)	0.5	0.19
Magnification Ratio (x)	0.22	0.32
Diameter (mm)	77	74
Type	Standard Zoom	Standard Zoom
APS Equivalent	27 - 300mm	1.5x: 42 - 300mm
Diaphragm Blades	7	7
Image Circle	APS-C	35mm (Full-frame E-Mount)
Focal Length (mm)	18.00 - 200.00	28.00 - 200.00
Brand	Nikon	Tamron
Name	Nikon 18-200mm f/3.5-5.6G IF-ED AF-S DX VR Nikkor	Tamron 28-200mm F/2.8-5.6 Di III RXD (Model A071)
Weight (g)	560	575.5
Diagonal Angle of View (degree)	8.00 - 76.00	12.35 - 75.38
Lens Construction	16 elements in 12 groups, including 3 aspherical and 2 ED elements	18 elements in 14 groups, including GM (Glass Molded Aspherical), hybrid aspherical, XLD (eXtra Low Dispersion) and LD (Low Dispersion) lens elements
Zoom System	Rotary	Rotary (with Zoom Lock)
Length (mm)	96.5	116.8
Diaphragm Blades Type	-	circular
Focus Details	Internal; AF-S "Silent Wave" motor with full-time manual focus override feature	Internal using RXD (Rapid eXtra-silent stepping Drive) autofocus motor