Comparison of Sony SAL-14TC 1.4X and Tamron 1.4X TC-X14

Attribute	Tamron 1.4X TC-X14 ×	Sony SAL-14TC 1.4X ×
Type	Teleconverter	Teleconverter
Name	Tamron 1.4X TC-X14	Sony SAL-14TC 1.4X
Weight (g)	205	170
Image Circle	35mm	35mm
Brand	Tamron	Sony
Magnification Ratio (x)	1.4	1.4
Lens Construction	6 elements in 3 groups	5 elements in 4 groups
Notes	Available AF Mounts: Canon EF, Nikon F; Included Accessories: Mount cap, Rear cap, Lens case	Compatible Lenses: Sony 70-200mm f/2.8 G, Sony 300mm f/2.8 G and Sony 135mm f/2.8 STF lenses
Diameter (mm)	70	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)	21.4	20