Comparison of Canon EF 24-70mm ƒ/2.8L II USM and Tokina 28-70mm f/2.8 AT-X 287 AF PRO SV

Attribute	Canon EF 24-70mm ƒ/2.8L II USM ×	Tokina 28-70mm f/2.8 AT-X 287 AF PRO SV ×
Notes	Weather sealing protects against dust and moisture, while a fluorine-coated front and rear elements are easy to clean.	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood, Fitted Soft Case
Magnification Ratio (x)	0.21	0.2
Filter Size (mm)	82	77
Length (mm)	113	108
Closest Focus (m)	0.38	0.7
Diagonal Angle of View (degree)	34.00 - 84.00	34.33 - 75.33
Focus Details	Inner focusing; full-time manual focus and USM	Internal with Focus Clutch mechanism
Focal Length (mm)	24.00 - 70.00	28.00 - 70.00
APS Equivalent	38 - 112mm	1.5x: 42 - 105mm; 1.6x: 44.8 - 112mm
Brand	Canon	Tokina
Image Circle	35mm	35mm
Name	Canon EF 24-70mm ƒ/2.8L II USM	Tokina 28-70mm f/2.8 AT-X 287 AF PRO SV
Weight (g)	805	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	18 elements in 13 groups, including 1 Super UD and 2 UD elements	16 elements in 12 groups
Zoom System	Rotating, with zoom lock lever	Rotary
Diameter (mm)	88.5	84