Comparison of Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical IF Macro and Vivitar 28-300mm f/4-6.3 Series 1 AF

Attribute	Vivitar 28-300mm f/4-6.3 Series 1 AF ×	Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical IF Macro ×
Notes	Available AF mounts: Canon, Minolta, Nikon	Image Stabilization. Available AF Mounts: Canon, Nikon. Included Accessories: Lens Hood.
Magnification Ratio (x)	0.18	0.29
Filter Size (mm)	77	72
Length (mm)	122	101
Closest Focus (m)	1.9	0.49
Diagonal Angle of View (degree)	8.20 - 75.00	6.00 - 75.60
Focus Details	AF/MF switch	Internal
Focal Length (mm)	28.00 - 300.00	18.00 - 270.00
APS Equivalent	1.5x: 42 - 450mm; 1.6x: 44.8 - 480mm	1.5x: 27 - 405mm; 1.6x: 28.8 - 432mm
Brand	Vivitar	Tamron
Image Circle	35mm	APS-C
Name	Vivitar 28-300mm f/4-6.3 Series 1 AF	Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical IF Macro
Weight (g)	570	560
Type	Standard Zoom	Standard Zoom
Aperture (f)	4.00 - 16.00	3.50 - 22.00
Diaphragm Blades	-	7
Diaphragm Blades Type	-	rounded
Lens Construction	17 elements in 15 groups	18 elements in 13 groups, including 2 LD (Low Dispersion) and 3 aspherical elements
Zoom System	Push-Pull	Rotary
Diameter (mm)	80	79.6