Comparison of Canon EF 70-200mm ƒ/2.8L IS II USM and Tamron 70-200mm f/2.8 Di VC USD G2 SP (Model A025)

Attribute	Canon EF 70-200mm ƒ/2.8L IS II USM ×	Tamron 70-200mm f/2.8 Di VC USD G2 SP (Model A025) ×
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	Moisture-Proof and Dust-Resistant Construction; Image Stabilized (CIPA rated to 5-stops); Available mounts: Canon EF, Nikon F
Closest Focus (m)	1.2	0.95
Magnification Ratio (x)	0.21	0.16
Diameter (mm)	88.8	88
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	Tamron
Name	Canon EF 70-200mm ƒ/2.8L IS II USM	Tamron 70-200mm f/2.8 Di VC USD G2 SP (Model A025)
Weight (g)	1490	1500
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	23 elements in 17 groups, including 1 XLD (Extra Low Dispersion) and 5 LD (Low Dispersion) elements; eBAND Coating; Fluorine Coating
Zoom System	Rotary	Rotary
Length (mm)	199	193.8
Diaphragm Blades Type	-	rounded
Focus Details	Inner focusing; full-time manual focus and USM	Internal using USD (Ultrasonic Silent Drive) motor with continuous manual focus mechanism; AF/MF switch; AF limiter switch