Comparison of Canon EF 28mm ƒ/2.8 IS USM and Sony SAL-20F28 20mm f/2.8

Attribute	Sony SAL-20F28 20mm f/2.8 ×	Canon EF 28mm ƒ/2.8 IS USM ×
Magnification Ratio (x)	0.13	0.2
Filter Size (mm)	72	58
Focus Details	Rear focusing	Rear-focusing; USM with full-time manual-focus override
Closest Focus (m)	0.25	0.23
Lens Construction	10 elements in 9 groups	9 elements in 7 groups, including aspherical lens elements
Length (mm)	53.5	51.5
Focal Length (mm)	20.00	28.00
Diaphragm Blades Type	-	circular
Brand	Sony	Canon
Image Circle	35mm	35mm
Name	Sony SAL-20F28 20mm f/2.8	Canon EF 28mm ƒ/2.8 IS USM
Weight (g)	285	260
Type	Wide Prime	Wide Prime
Notes	Included Accessories: SH0013 Lens Hood	Image Stabilizer (up to 4-stops of correction).
APS Equivalent	30mm	45mm
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	94.00	75.00
Diameter (mm)	78	68.4