Comparison of Nikon 18-35mm ƒ/3.5-4.5G ED AF-S Nikkor and Tamron 17-28mm f/2.8 Di III RXD (Model A046)

Attribute	Nikon 18-35mm ƒ/3.5-4.5G ED AF-S Nikkor ×	Tamron 17-28mm f/2.8 Di III RXD (Model A046) ×
Filter Size (mm)	77	67
Notes	Included Accessories: Front and rear lens caps, bayonet lens hood, soft lens case	Available mounts: Sony FE-mount; Moisture-resisteant construction
Closest Focus (m)	0.28	0.19
Magnification Ratio (x)	0.2	0.19
Diameter (mm)	83	73
Type	Wide Zoom	Wide Zoom
APS Equivalent	27 - 52mm	-
Diagonal Angle of View (degree)	63.00 - 100.00	76.40 - 104.70
Image Circle	35mm	Image Circle
Focal Length (mm)	18.00 - 35.00	17.00 - 28.00
Brand	Nikon	Tamron
Name	Nikon 18-35mm ƒ/3.5-4.5G ED AF-S Nikkor	Tamron 17-28mm f/2.8 Di III RXD (Model A046)
Weight (g)	385	420
Aperture (f)	3.50 - 29.00	2.80 - 22.00
Diaphragm Blades	7	9
Diaphragm Blades Type	rounded	circular
Lens Construction	12 elements in 8 groups, including 2 ED and 3 aspherical elements	13 elements in 11 groups, including 2 LD (Low Dispersion), 1 XLD (Extra Low Dispersion) and 3 aspherical elements
Zoom System	Rotary	Rotary
Length (mm)	95	99
35mm Equivalent	-	1.5x: 25.5 - 42mm; 1.6x: 27.2 - 44.8mm
Focus Details	Internal with Silent Wave Motor (SWM); M/A, M switch	Internal via RXD (Rapid eXtra-silent stepping Drive) with DMF (Direct Manual Focus)