7 element teleconverter which can be used on all Hasselblad SLR cameras to double the focal length of any lens. Can be used with any Hasselblad lens except the 135mm f5.6 Makro Planar. Equipped with the electronic contacts for full data transmission when using it with TCC/FE lenses and the 200 series cameras. Using this converter will reduce the maximum aperture of any lens by 2 f stops. However, no meter adjustment is necessary if the meter reading is taken using a meter prism, or with the meter-built-in 200 series cameras.