The series of extension tubes automatically connect the lens and camera mechanism together to utilize the camera's functions fully for ease of use.
| ||With the exception of Extension tube 8, which cannot be connected directly to the 200-series cameras, they also feature a data bus coupling to transfer data from the lens to the exposure metering system of the camera.|| |
Extension tube 8 (3040649)
Extension tube 16E (3040654)
Extension tube 32E (3040655)
Extension tube 56E (3040656)