Comparison of Sony SEL14TC 1.4X and Tamron SP AF 2X PRO

Attribute	Tamron SP AF 2X PRO ×	Sony SEL14TC 1.4X ×
Type	Teleconverter	Teleconverter
Name	Tamron SP AF 2X PRO	Sony SEL14TC 1.4X
Weight (g)	184	167
Image Circle	35mm	35mm
Brand	Tamron	Sony
Magnification Ratio (x)	2	1.4
Lens Construction	7 elements in 4 groups	6 elements in 5 groups, including 1 aspherical element
Notes	Available AF Mounts: Canon, Minolta, Nikon	For Sony E-mount; Compatible Lenses: Sony SEL70200GM and SEL100400GM lenses.
Diameter (mm)	68.5	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)	43.5	33.6