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

Attribute	Canon Extender EF 1.4x II ×	Nikon AF-S TC-14E III 1.4X ×
Weight (g)	220	190
Type	Teleconverter	Teleconverter
Brand	Canon	Nikon
Name	Canon Extender EF 1.4x II	Nikon AF-S TC-14E III 1.4X
Lens Construction	5 elements in 4 groups	7 elements in 4 groups
Image Circle	35mm	35mm
Magnification Ratio (x)	1.4	1.4
Diameter (mm)	72.8	64
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