Comparison of Canon 14mm f/2.8L II USM and Sigma 14mm f/2.8 EX Aspherical HSM

Attribute	Sigma 14mm f/2.8 EX Aspherical HSM ×	Canon 14mm f/2.8L II USM ×
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax	Built-in Lens Hood
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Closest Focus (m)	0.18	0.2
Magnification Ratio (x)	0.2	0.15
Length (mm)	91	94
Focus Details	Internal focus; HSM with full-time manual override	Internal focus; USM with full-time manual override
APS Equivalent	1.5x: 21mm; 1.6x: 22.4mm	22.4mm
Type	Wide Prime	Wide Prime
Image Circle	35mm	35mm
Focal Length (mm)	14.00	14.00
Brand	Sigma	Canon
Name	Sigma 14mm f/2.8 EX Aspherical HSM	Canon 14mm f/2.8L II USM
Weight (g)	630	645
Diagonal Angle of View (degree)	114.20	114.00
Diaphragm Blades	7	6
Diameter (mm)	82	80
Lens Construction	14 elements in 10 groups, including 2 aspherical and 2 SLD elements	14 elements in 11 groups, including aspherical and UD elements