Comparison of Canon TS-E 17mm f/4L and Sigma 20mm ƒ/1.4 DG HSM Art

Attribute	Sigma 20mm ƒ/1.4 DG HSM Art ×	Canon TS-E 17mm f/4L ×
Diaphragm Blades	9	-
Weight (g)	963	820
Type	Wide Prime	Wide Prime Tilt-Shift
Brand	Sigma	Canon
Name	Sigma 20mm ƒ/1.4 DG HSM Art	Canon TS-E 17mm f/4L
Diameter (mm)	129.5	88.9
Image Circle	35mm	35mm
Lens Construction	15 elements in 11 groups, including 1 double-sided aspherical, 2 FLD and 5 SLD elements	18 elements in 12 groups
APS Equivalent	1.5x: 30mm; 1.6x: 32mm	27mm
Closest Focus (m)	0.28	0.25
Focus Details	HSM (Hypersonic Motor) with full-time manual focus override	Manual focus
Magnification Ratio (x)	0.14	0.14
Aperture (f)	1.40 - 16.00	4.00 - 22.00
Diagonal Angle of View (degree)	94.50	104.00
Notes	Available AF Mounts: Sigma SA, Canon EF, L-Mount, Nikon F, Sony E; Compatible with Sigma's USB Dock and Mount Conversion Service	-
Focal Length (mm)	20.00	17.00
Diaphragm Blades Type	rounded	-
Length (mm)	91.4	106.7