Comparison of Canon EF-S 24mm ƒ/2.8 STM and Pentax SMC P-FA 43mm ƒ/1.9 Limited

Attribute	Pentax SMC P-FA 43mm ƒ/1.9 Limited ×	Canon EF-S 24mm ƒ/2.8 STM ×
Filter Size (mm)	49	52
Aperture (f)	1.90 - 22.00	2.80 - 22.00
Closest Focus (m)	0.45	0.16
Magnification Ratio (x)	0.12	0.27
Type	Standard Prime	Wide Prime
Focus Details	Dedicated AF/MF	Stepping motor (STM) for smooth, near silent AF when shooting stills and movies; full-time manual focus
APS Equivalent	64.5mm	38mm
Diameter (mm)	64	68.2
Image Circle	35mm	APS-C
Focal Length (mm)	43.00	24.00
Brand	Pentax	Canon
Name	Pentax SMC P-FA 43mm ƒ/1.9 Limited	Canon EF-S 24mm ƒ/2.8 STM
Weight (g)	155	125
Diaphragm Blades Type	-	rounded
Diaphragm Blades	8	7
Diagonal Angle of View (degree)	53.00	34.90
Length (mm)	27	22.8
Notes	Distance scale, Aperture ring, IR index. Included accessories: lens hood, soft case. Available in silver or black.	-
Lens Construction	7 elements in 6 groups	6 elements in 5 groups, including 1 aspherical element