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

Attribute	Sigma TC-1401 1.4X Teleconverter ×	Nikon AF-S TC-14E III 1.4X ×
Notes	Dust and splash-proof; Available AF Mounts: Canon EF, Nikon F, Sigma SA	-
Weight (g)	190	190
Type	Teleconverter	Teleconverter
Brand	Sigma	Nikon
Name	Sigma TC-1401 1.4X Teleconverter	Nikon AF-S TC-14E III 1.4X
Lens Construction	7 elements in 5 groups, including 1 SLD element	7 elements in 4 groups
Image Circle	35mm	35mm
Magnification Ratio (x)	1.4	1.4
Diameter (mm)	69.8	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)	25	24.5