Comparison of Canon EF-M 22mm ƒ/2 STM and Samsung 20mm f/2.8 NX i-Function

Attribute	Samsung 20mm f/2.8 NX i-Function ×	Canon EF-M 22mm ƒ/2 STM ×
Magnification Ratio (x)	0.18	0.21
Filter Size (mm)	43	43
Focus Details	-	Internal, using Stepper Motor (STM); Fly-by-wire manual focus.
Closest Focus (m)	0.17	0.15
Lens Construction	6 elements in 4 groups, including 1 aspherical element	7 elements in 6 groups, including 1 aspheric element
Length (mm)	24.5	23.7
Focal Length (mm)	20.00	22.00
Diaphragm Blades Type	circular	rounded
Brand	Samsung	Canon
Image Circle	Samsung NX (APS-C)	APS-C
Name	Samsung 20mm f/2.8 NX i-Function	Canon EF-M 22mm ƒ/2 STM
Weight (g)	89	105
Type	Wide Prime	Wide Prime
Notes	Lens hood optional; i-Scene Mode: Supported (Backlight, Landscape, Sunset, Dawn, Beach&Snow, Night)	EF-M lens mount exclusively for EOS M bodies.
APS Equivalent	30.8mm	35mm
Aperture (f)	2.80 - 22.00	2.00 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	70.20	63.50
Diameter (mm)	62.2	60.9