Comparison of Kenko Teleplus PRO 300 DG AF 3X and Tamron SP AF 2X PRO

Attribute	Kenko Teleplus PRO 300 DG AF 3X ×	Tamron SP AF 2X PRO ×
Type	Teleconverter	Teleconverter
Name	Kenko Teleplus PRO 300 DG AF 3X	Tamron SP AF 2X PRO
Weight (g)	200	184
Image Circle	35mm	35mm
Brand	Kenko	Tamron
Magnification Ratio (x)	3	2
Lens Construction	7 elements in 4 groups	7 elements in 4 groups
Notes	Available AF Mounts: Canon, Minolta, Nikon	Available AF Mounts: Canon, Minolta, Nikon
Diameter (mm)	68.3	68.5
Focal Length Multiplier	3X that of the master lens	2X that of the master lens
Effective Reduction in Aperture	3 f-stops	2 f-stops
Length (mm)	43.5	43.5