Comparison of Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical IF and Vivitar 28-210mm f/4.2-6.5 Series 1 AF

Attribute	Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical IF ×	Vivitar 28-210mm f/4.2-6.5 Series 1 AF ×
Filter Size (mm)	62	67
Closest Focus (m)	0.45	0.5
Magnification Ratio (x)	0.27	0.15
Length (mm)	83.7	99
Front Element Rotation	-	-
Diagonal Angle of View (degree)	7.00 - 75.00	11.00 - 75.00
Focus Details	Internal focusing system	AF/MF switch
Focal Length (mm)	18.00 - 200.00	28.00 - 200.00
APS Equivalent	1.5x: 27 - 300mm; 1.6x: 28.8 - 320mm	1.5x: 42 - 315mm; 1.6x: 44.8 - 336mm
Brand	Tamron	Vivitar
Image Circle	Image Circle	35mm
Name	Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical IF	Vivitar 28-210mm f/4.2-6.5 Series 1 AF
Weight (g)	398	395
Type	Standard Zoom	Standard Zoom
Notes	Available mounts: Canon, Minolta, Nikon, Pentax. Includes petal type hood.	Available AF mounts: Canon, Minolta, Nikon, Pentax
Diaphragm Blades	7	-
Aperture (f)	3.50 - 22.00	4.20 - 22.00
Lens Construction	15 elements in 13 groups, with low dispersion, aspherical and extra reffractive index elements	15 elements in 13 groups
Zoom System	Rotating, Telescoping	Push-Pull
Diameter (mm)	73.8	72