Comparison of Canon EF-M 22mm ƒ/2 STM and Olympus 17mm ƒ/1.8 M.Zuiko Digital

Attribute	Olympus 17mm ƒ/1.8 M.Zuiko Digital ×	Canon EF-M 22mm ƒ/2 STM ×
Notes	Includes front and rear plastic lens caps, instruction manual. Optional LH-48B metal lens hood, LC-48B metal lens cap available.	EF-M lens mount exclusively for EOS M bodies.
Magnification Ratio (x)	0.08	0.21
Filter Size (mm)	46	43
Focus Details	-	Internal, using Stepper Motor (STM); Fly-by-wire manual focus.
Closest Focus (m)	0.25	0.15
Diagonal Angle of View (degree)	65.00	63.50
Lens Construction	9 elements in 6 groups, including 1 high refractive and 3 aspherical elements (with a Dual Super aspherical element)	7 elements in 6 groups, including 1 aspheric element
Focal Length (mm)	17.00	22.00
APS Equivalent	-	35mm
Brand	Olympus	Canon
Image Circle	Image Circle	APS-C
Name	Olympus 17mm ƒ/1.8 M.Zuiko Digital	Canon EF-M 22mm ƒ/2 STM
Weight (g)	120	105
Type	Wide Prime	Wide Prime
Aperture (f)	1.80 - 22.00	2.00 - 22.00
Diaphragm Blades	7	7
Diaphragm Blades Type	circular	rounded
Length (mm)	35.5	23.7
35mm Equivalent	34mm	-
Diameter (mm)	57.5	60.9