Comparison of Canon 14mm f/2.8L II USM and Tamron SP AF 14mm f/2.8 Aspherical IF

Attribute	Canon 14mm f/2.8L II USM ×	Tamron SP AF 14mm f/2.8 Aspherical IF ×
Notes	Built-in Lens Hood	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood, Case
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Closest Focus (m)	0.2	0.2
Magnification Ratio (x)	0.15	0.15
Length (mm)	94	89
Focus Details	Internal focus; USM with full-time manual override	Internal
APS Equivalent	22.4mm	1.5x: 21mm; 1.6x: 22.4mm
Type	Wide Prime	Wide Prime
Image Circle	35mm	35mm
Focal Length (mm)	14.00	14.00
Brand	Canon	Tamron
Name	Canon 14mm f/2.8L II USM	Tamron SP AF 14mm f/2.8 Aspherical IF
Weight (g)	645	661
Diagonal Angle of View (degree)	114.00	113.80
Diaphragm Blades	6	5
Diameter (mm)	80	87
Lens Construction	14 elements in 11 groups, including aspherical and UD elements	14 elements in 12 groups, including 2 hybrid aspherical elements