Comparison of Panasonic DMW-TC20 2X and Sony SEL14TC 1.4X

Attribute	Panasonic DMW-TC20 2X ×	Sony SEL14TC 1.4X ×
Type	Teleconverter	Teleconverter
Name	Panasonic DMW-TC20 2X	Sony SEL14TC 1.4X
Weight (g)	160	167
Image Circle	Micro Four-Thirds	35mm
Brand	Panasonic	Sony
Magnification Ratio (x)	2	1.4
Lens Construction	8 elements in 5 groups	6 elements in 5 groups, including 1 aspherical element
Notes	Splash, Dust, and Freezeproof design	For Sony E-mount; Compatible Lenses: Sony SEL70200GM and SEL100400GM lenses.
Diameter (mm)	58	62.4
Focal Length Multiplier	2X that of the master lens	1.4X that of the master lens
Effective Reduction in Aperture	2 f-stops	1 f-stop
Length (mm)	34	33.6