Comparison of Nikon 28-200mm f/3.5-5.6G ED-IF AF Nikkor and Tamron AF 28-200mm f/3.8-5.6 XR Di Aspherical IF Macro

Attribute	Tamron AF 28-200mm f/3.8-5.6 XR Di Aspherical IF Macro ×	Nikon 28-200mm f/3.5-5.6G ED-IF AF Nikkor ×
Filter Size (mm)	62	62
Notes	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood	Included Accessories: HB-30 Hood
Closest Focus (m)	0.49	0.4
Magnification Ratio (x)	0.25	0.32
Type	Standard Zoom	Standard Zoom
Length (mm)	75.2	71
APS Equivalent	1.5x: 42 - 300mm; 1.6x: 44.8 - 320mm	42 - 300mm
Zoom System	Rotary	Rotary
Image Circle	35mm	35mm
Focal Length (mm)	28.00 - 200.00	28.00 - 200.00
Brand	Tamron	Nikon
Name	Tamron AF 28-200mm f/3.8-5.6 XR Di Aspherical IF Macro	Nikon 28-200mm f/3.5-5.6G ED-IF AF Nikkor
Weight (g)	354	360
Aperture (f)	3.80 - 22.00	3.50 - 36.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	12.40 - 75.40	12.30 - 74.30
Lens Construction	15 elements in 14 groups, including aspherical and XR elements	12 elements in 11 groups, including 3 asperical and 3 ED elements
Diameter (mm)	71	69
Focus Details	Internal	Internal; Focus Limit Switch