Comparison of Canon RF 85mm f/1.2L USM and Sigma 105mm f/1.4 DG HSM Art

Attribute	Sigma 105mm f/1.4 DG HSM Art ×	Canon RF 85mm f/1.2L USM ×
Filter Size (mm)	105	82
Notes	Available AF Mounts: Canon EF, Nikon F, L-Mount, Sigma SA, Sony E; Dust- and splash-proof construction	Dust- and Weather-resistant
Closest Focus (m)	1	0.85
Magnification Ratio (x)	0.12	0.12
Type	Telephoto Prime	Telephoto Prime
Length (mm)	131.5	117.3
APS Equivalent	1.5x: 157.5mm; 1.6x: 168mm	136mm
Diagonal Angle of View (degree)	23.30	28.50
Image Circle	35mm	35mm
Focal Length (mm)	105.00	85.00
Brand	Sigma	Canon
Name	Sigma 105mm f/1.4 DG HSM Art	Canon RF 85mm f/1.2L USM
Weight (g)	1645	1195
Aperture (f)	1.40 - 16.00	1.20 - 16.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	circular
Lens Construction	17 elements in 12 groups, including 3 FLD glass elements, 2 SLD glass elements, and 1 aspherical lens element	13 elements in 9 groups, including 1 aspherical, 1 Blue Spectrum Refractive Optics (BR) and 1 UD element; Air Sphere Coating
Diameter (mm)	115.9	104.2
Focus Details	Internal with HSM (Hypersonic Motor); full-time manual override	Internal with ring type USM; AF/MF switch; Focus limiter switch