The Hasselblad Teleconverter APO 1.4XE is optimized for the Superachromat CFE 350mm f/5.6 lens. It extends the focal length 1.4 times and reduces the aperture by one stop, resulting in a 490mm f/8.
This converter can also be used with the Sonnar CFi 250mm, Tele-Tessar CF 350mm, Tele-Apotessar CF 500mm and the Tele-Tessar FE 350mm
Databus connections transmit data from FE and CFE lenses to the metering systems of 200 series camera models