Comparison of Canon Extender EF 1.4x III and Nikon AF-S TC-14E II 1.4X

Attribute	Canon Extender EF 1.4x III ×	Nikon AF-S TC-14E II 1.4X ×
Notes	-	Compatible with AF-S and AF-I Nikkor lenses except AF-S 17-35mm f/2.8D IF-ED and AF-S 28-70mm f/2.8D IF-ED.
Weight (g)	225	200
Type	Teleconverter	Teleconverter
Brand	Canon	Nikon
Name	Canon Extender EF 1.4x III	Nikon AF-S TC-14E II 1.4X
Lens Construction	7 elements in 3 groups	5 elements in 5 groups
Image Circle	35mm	35mm
Magnification Ratio (x)	1.4	1.4
Diameter (mm)	72	66
Focal Length Multiplier	1.4X that of the master lens	1.4X that of the master lens
Effective Reduction in Aperture	1 f-stop	1 f-stop
Length (mm)	27.2	24.5