Comparison of Tamron SP 24-70mm ƒ/2.8 Di VC USD (Model A007) and Tokina 28-70mm f/2.8 AT-X 287 AF PRO SV

Attribute	Tamron SP 24-70mm ƒ/2.8 Di VC USD (Model A007) ×	Tokina 28-70mm f/2.8 AT-X 287 AF PRO SV ×
Notes	VC image stabilization. Available mounts: Canon, Nikon, Sony. Includes petal type lens hood.	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood, Fitted Soft Case
Magnification Ratio (x)	0.2	0.2
Filter Size (mm)	82	77
Length (mm)	116.9	108
Closest Focus (m)	0.38	0.7
Diagonal Angle of View (degree)	34.30 - 84.00	34.33 - 75.33
Focus Details	Internal with USD (Ultrasonic Silent Drive), continuous manual mechanism	Internal with Focus Clutch mechanism
Focal Length (mm)	24.00 - 70.00	28.00 - 70.00
APS Equivalent	1.5x: 36 - 105mm; 1.6x: 38.4 - 112mm	1.5x: 42 - 105mm; 1.6x: 44.8 - 112mm
Brand	Tamron	Tokina
Image Circle	Image Circle	35mm
Name	Tamron SP 24-70mm ƒ/2.8 Di VC USD (Model A007)	Tokina 28-70mm f/2.8 AT-X 287 AF PRO SV
Weight (g)	825	719
Type	Standard Zoom	Standard Zoom
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	8
Diaphragm Blades Type	rounded	-
Lens Construction	17 elements in 12 groups, including 3 LD, 3 glass-molded aspherical, 1 hybrid aspherical and 2 XR (Extra Refractive Index) elements	16 elements in 12 groups
Zoom System	Rotary	Rotary
Diameter (mm)	88.2	84