Comparison of Fujinon XF 50mm f/1.0 R WR and Pentax 50mm f/1.4 SDM AW HD D FA*

Attribute	Pentax 50mm f/1.4 SDM AW HD D FA* ×	Fujinon XF 50mm f/1.0 R WR ×
Magnification Ratio (x)	0.18	0.08
Filter Size (mm)	72	77
Focus Details	Ring-type SDM (Supersonic Direct-drive Motor)	Inner focusing with stepper motor
Closest Focus (m)	0.4	0.7
Lens Construction	15 elements in 9 groups, including 3 SLD (Super Low Dispersion) glass elements and 1 aspherical element	12 elements in 9 groups (includes 1 aspherical, 2 ED elements)
Length (mm)	106	103.5
Focal Length (mm)	50.00	50.00
Diaphragm Blades Type	-	rounded
Brand	Pentax	Fujinon
Image Circle	35mm	APS-C (Fujifilm X-mount)
Name	Pentax 50mm f/1.4 SDM AW HD D FA*	Fujinon XF 50mm f/1.0 R WR
Weight (g)	910	845
Type	Standard Prime	Telephoto Prime
Notes	Dustproof, weather-resistant construction; Electromagnetic diaphragm	For Fujifilm X-mount; Weather- and dust-resistant; Included Accessories: Lens caps, lens hood, wrapping cloth.
APS Equivalent	75mm	76mm
Aperture (f)	1.40 - 16.00	1.00 - 16.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	47.00	31.70
Diameter (mm)	80	87