Comparison of Tamron AF 18-270mm ƒ/3.5-6.3 Di II VC PZD (Model B008) and Tamron 28-300mm f/3.5-6.3 Di VC PZD (Model A010)

Attribute	Tamron 28-300mm f/3.5-6.3 Di VC PZD (Model A010) ×	Tamron AF 18-270mm ƒ/3.5-6.3 Di II VC PZD (Model B008) ×
Aperture (f)	3.50 - 40.00	3.50 - 40.00
Filter Size (mm)	67	62
Notes	Includes flower-shaped lens hood. Available AF mounts: Canon EF-S, Nikon F, Sony A; VC Image Stabilization; Sony version does not include VC.	New VC mechanism (Image Stabilization). Available AF Mounts: Canon EF-S, Nikon F, Sony A. Included Accessories: Flower-shaped Lens Hood.
Closest Focus (m)	0.49	0.49
Magnification Ratio (x)	0.29	0.26
Zoom System	Rotary	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	1.5x: 42 - 450mm1.6x: 44.8 - 480mm	1.5x: 27 - 405mm; 1.6x: 28.8 - 432mm
Diaphragm Blades	7	7
Image Circle	Image Circle	APS-C
Focal Length (mm)	28.00 - 300.00	18.00 - 270.00
Brand	Tamron	Tamron
Name	Tamron 28-300mm f/3.5-6.3 Di VC PZD (Model A010)	Tamron AF 18-270mm ƒ/3.5-6.3 Di II VC PZD (Model B008)
Weight (g)	540	450
Diaphragm Blades Type	circular	rounded
Lens Construction	19 elements in 15 groups, including 3 Molded-Glass Aspherical, 1 Hybrid Aspherical, 1 XR (Extra Refractive index), 1 UXR (Ultra-Extra Refractive Inde	16 elements in 13 groups
Diagonal Angle of View (degree)	8.33 - 75.38	5.90 - 75.50
Length (mm)	96	88
Diameter (mm)	74.4	74.4
Focus Details	Internal with Piezo Drive motor; Full-time manual focus function	Internal with Piezo Drive (PZD) ultrasonic motor