The 2X Teleconverter extends the effective focal length prime lenses by a factor of 2. Essentially it doubles the effective focal length at the loss of 2 f-stops of light. They are useful to maximize telephoto possibilities of any lens.
|Construction||6 groups /7 elements|
|Angle of view||1/2 prime lens|
|F stop range||Exposure factor 4X (2 f stops)|
|Closest Focusing Distance||same as prime lens|
|Dimensions (Length x Diameter)||53mm x 83mm / 2.1 in x 3.3 in|
|Weight||460g / 16.4 oz.|