Comparison of Fujinon GF 1.4X TC WR and Sigma TC-2001 2X Teleconverter

Attribute	Fujinon GF 1.4X TC WR ×	Sigma TC-2001 2X Teleconverter ×
Type	Teleconverter	Teleconverter
Name	Fujinon GF 1.4X TC WR	Sigma TC-2001 2X Teleconverter
Weight (g)	400	290
Image Circle	Medium Format (Fujifilm G-mount)	35mm
Brand	Fujinon	Sigma
Magnification Ratio (x)	1.4	2
Lens Construction	7 elements in 3 groups	10 elements in 5 groups, including 2 SLD elements
Notes	For Fujifilm G-mount; Weather- and Dust-resistant; Included Accessories: Lens cap, Lens rear cap RLCP-002, Lens pouch.	Dust and splash-proof; Available AF Mounts: Canon EF, Nikon F, Sigma SA
Diameter (mm)	82	69.8
Focal Length Multiplier	1.4X that of the master lens	2X that of the master lens
Effective Reduction in Aperture	1 f-stop	2 f-stops
Length (mm)	26.7	48.9