The extension tubes can be combined to provide a variety of extensions. They connect to the lens and the camera mechanisms to fully utilize the camera's automatic functions. Extension tubes type E fit all Hasselblad SLR camera models and FlexBody. They are equipped with databus connections that transmit the lens data to the 202FA, 203FE and 205FCC camera electronics. For physical reasons, the Extension Tube 8 cannot be connected directly to a 200 or 2000 series camera body. Also, as it does not feature databus connections, the databus chain will be broken when between a FE/CFE lens and an extension tube type E.