Comparison of Canon RF 50mm f/1.2L USM and Sigma 50mm ƒ/1.4 DG HSM Art

Attribute	Canon RF 50mm f/1.2L USM ×	Sigma 50mm ƒ/1.4 DG HSM Art ×
Filter Size (mm)	77	77
Notes	For Canon RF-mount; Weatherproofing	Supported AF Mounts: Canon EF, Nikon F, L-Mount, Sigma SA, Sony A, Sony E. Included Accessories: front and rear lens caps, soft case, lens hood (LH83
Closest Focus (m)	0.4	0.4
Magnification Ratio (x)	0.19	0.18
Type	Standard Prime	Standard Prime
Length (mm)	108	99.9
APS Equivalent	80mm	1.5x: 75mm; 1.6x: 80mm
Diagonal Angle of View (degree)	46.00	46.80
Image Circle	35mm (RF-mount)	35mm
Focal Length (mm)	50.00	50.00
Brand	Canon	Sigma
Name	Canon RF 50mm f/1.2L USM	Sigma 50mm ƒ/1.4 DG HSM Art
Weight (g)	950	810
Aperture (f)	1.20 - 16.00	1.40 - 16.00
Diaphragm Blades	10	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	15 elements in 9 groups, including ground aspherical, aspherical and UD elements, Air Sphere and Fluorine coatings	13 elements in 8 groups, including 1 aspherical and 3 SLD elements
Diameter (mm)	89.8	85.4
Focus Details	Internal; Ring USM with full-time manual focus	HSM, with full-time manual focus override