Comparison of Canon Extender EF 2x II and Konica Minolta AF Apo (D) 2X

Attribute	Canon Extender EF 2x II ×	Konica Minolta AF Apo (D) 2X ×
Weight (g)	265	200
Type	Teleconverter	Teleconverter
Brand	Canon	Konica-minolta
Name	Canon Extender EF 2x II	Konica Minolta AF Apo (D) 2X
Lens Construction	7 elements in 5 groups	6 elements in 5 groups
Image Circle	35mm	35mm
Magnification Ratio (x)	2	2
Diameter (mm)	71.8	64
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)	57.9	43.5