TC-14B Teleconverter
Converts by a factor of x1.4 the focal length of the lens in use with just one stop loss of aperture.
Coupling range is from f/2 to f/32
Effective aperture from f/2.8 to f/45
The reproduction ratio is 1.4x that of lens in use
The depth of field is about 70% of that of lens in use
