Comparison of Canon RF 50mm f/1.2L USM and Pentax 50mm f/1.4 SDM AW HD D FA*

Attribute	Canon RF 50mm f/1.2L USM ×	Pentax 50mm f/1.4 SDM AW HD D FA* ×
Magnification Ratio (x)	0.19	0.18
Filter Size (mm)	77	72
Focus Details	Internal; Ring USM with full-time manual focus	Ring-type SDM (Supersonic Direct-drive Motor)
Closest Focus (m)	0.4	0.4
Lens Construction	15 elements in 9 groups, including ground aspherical, aspherical and UD elements, Air Sphere and Fluorine coatings	15 elements in 9 groups, including 3 SLD (Super Low Dispersion) glass elements and 1 aspherical element
Length (mm)	108	106
Focal Length (mm)	50.00	50.00
Diaphragm Blades Type	rounded	-
Brand	Canon	Pentax
Image Circle	35mm (RF-mount)	35mm
Name	Canon RF 50mm f/1.2L USM	Pentax 50mm f/1.4 SDM AW HD D FA*
Weight (g)	950	910
Type	Standard Prime	Standard Prime
Notes	For Canon RF-mount; Weatherproofing	Dustproof, weather-resistant construction; Electromagnetic diaphragm
APS Equivalent	80mm	75mm
Aperture (f)	1.20 - 16.00	1.40 - 16.00
Diaphragm Blades	10	9
Diagonal Angle of View (degree)	46.00	47.00
Diameter (mm)	89.8	80