Comparison of Nikon AF-S TC-14E II 1.4X and Sigma TC-1401 1.4X Teleconverter

Attribute	Sigma TC-1401 1.4X Teleconverter ×	Nikon AF-S TC-14E II 1.4X ×
Type	Teleconverter	Teleconverter
Name	Sigma TC-1401 1.4X Teleconverter	Nikon AF-S TC-14E II 1.4X
Weight (g)	190	200
Image Circle	35mm	35mm
Brand	Sigma	Nikon
Magnification Ratio (x)	1.4	1.4
Lens Construction	7 elements in 5 groups, including 1 SLD element	5 elements in 5 groups
Notes	Dust and splash-proof; Available AF Mounts: Canon EF, Nikon F, Sigma SA	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.
Diameter (mm)	69.8	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)	25	24.5