Comparison of Canon EF 24mm ƒ/2.8 IS USM and Nikon 20mm f/2.8D AF Nikkor

Attribute	Nikon 20mm f/2.8D AF Nikkor ×	Canon EF 24mm ƒ/2.8 IS USM ×
Magnification Ratio (x)	0.12	0.23
Filter Size (mm)	62	58
Focus Details	Close Range Correction (CRC)	Rear-focusing; USM with full-time manual-focus override
Closest Focus (m)	0.25	0.2
Lens Construction	12 elements in 9 groups	11 elements in 9 groups, including aspherical lens elements
Length (mm)	69	55.7
Focal Length (mm)	20.00	24.00
Diaphragm Blades Type	-	circular
Brand	Nikon	Canon
Image Circle	35mm	35mm
Name	Nikon 20mm f/2.8D AF Nikkor	Canon EF 24mm ƒ/2.8 IS USM
Weight (g)	269	280
Type	Wide Prime	Wide Prime
Notes	-	Image Stabilizer (up to 4-stops of correction).
APS Equivalent	30mm	38mm
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	94.00	84.00
Diameter (mm)	69	68.4