Comparison of Olympus EC-20 2X Zuiko Digital and Sony SEL20TC 2X

Attribute	Olympus EC-20 2X Zuiko Digital ×	Sony SEL20TC 2X ×
Type	Teleconverter	Teleconverter
Name	Olympus EC-20 2X Zuiko Digital	Sony SEL20TC 2X
Weight (g)	225	207
Image Circle	Four-thirds	35mm
Brand	Olympus	Sony
Magnification Ratio (x)	2	2
Lens Construction	7 elements in 5 groups	8 elements in 5 groups, including 1 aspherical element
Notes	Can be attached to any ZUIKO DIGITAL interchangeable lens. Dust & Drip Proof. Included Accessories: Lens Cap (BC-1), Lens Case (LSC-0814).	For Sony E-mount; Compatible Lenses: Sony SEL70200GM and SEL100400GM lenses.
Diameter (mm)	68	62.4
Focal Length Multiplier	2X that of the master lens	2X that of the master lens
Effective Reduction in Aperture	2 f-stops	2 f-stops
Length (mm)	41	42.7