Comparison of Canon EF 70-200mm ƒ/2.8L IS II USM and Sigma 70-200mm ƒ/2.8 EX DG OS HSM APO

Attribute	Canon EF 70-200mm ƒ/2.8L IS II USM ×	Sigma 70-200mm ƒ/2.8 EX DG OS HSM APO ×
Aperture (f)	2.80 - 32.00	2.80 - 22.00
Filter Size (mm)	77	77
Notes	Image Stabilization (up to 4 stops of correction); Dust and Moisture Resistant	Image Stabilized. Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony. Included Accessories: Case, Petal-type Hood (LH850-02), Hood Adapter, Tripo
Closest Focus (m)	1.2	1.4
Magnification Ratio (x)	0.21	0.13
Diameter (mm)	88.8	86.4
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	112 - 320mm	1.5x: 105 - 300mm; 1.6x: 112 - 320mm
Diaphragm Blades	8	9
Image Circle	35mm	35mm
Focal Length (mm)	70.00 - 200.00	70.00 - 200.00
Brand	Canon	Sigma
Name	Canon EF 70-200mm ƒ/2.8L IS II USM	Sigma 70-200mm ƒ/2.8 EX DG OS HSM APO
Weight (g)	1490	1430
Diagonal Angle of View (degree)	12.00 - 34.00	12.30 - 34.30
Lens Construction	23 elements in 19 groups, including 1 Fluorite and 5 UD elements	22 elements in 17 groups, including 3 SLD and 2 FLD elements
Zoom System	Rotary	Rotary with lock; Internal
Length (mm)	199	197.6
Diaphragm Blades Type	-	rounded
Focus Details	Inner focusing; full-time manual focus and USM	Internal; HSM with full-time manual override