Comparison of Canon EF 24mm f/1.4L II USM and Sigma 24mm f/1.4 DG HSM Art

Attribute	Sigma 24mm f/1.4 DG HSM Art ×	Canon EF 24mm f/1.4L II USM ×
Diaphragm Blades Type	rounded	circular
Notes	Available AF Mounts: Canon EF, L-Mount, Nikon F, Sigma SA and Sony E; Compatible with Sigma's USB Dock and Mount Conversion Service	Lens hood and pouch supplied.
Aperture (f)	1.40 - 16.00	1.40 - 22.00
Magnification Ratio (x)	0.19	0.17
Filter Size (mm)	77	77
APS-C Equivalent	-	38mm
Type	Wide Prime	Wide Prime
Diaphragm Blades	9	8
Lens Construction	15 elements in 11 groups, including 3 FLD, 4 SLD and 2 aspherical elements	13 elements in 10 groups, including 2 UD elements
Image Circle	35mm	35mm
Focal Length (mm)	24.00	24.00
Brand	Sigma	Canon
Name	Sigma 24mm f/1.4 DG HSM Art	Canon EF 24mm f/1.4L II USM
Weight (g)	665	650
Diagonal Angle of View (degree)	84.10	84.00
Focus Details	HSM (Hypersonic Motor) with full-time manual focus override	Rear focusing; full-time manual focus and USM
Diameter (mm)	85	93.5
Length (mm)	90.2	86.9
APS Equivalent	1.5x: 36mm; 1.6x: 38.4mm	-
Closest Focus (m)	0.25	0.25