Canon has released an expansion module for the EOS C500 Mark II and EOS C300 Mark III to provide additional functionality for multi-camera and live productions.

Canon said the launch of the EU-V3 unit was a response to the increased move towards large format sensor cameras for broadcast, events and live sports production.
The EU-V3 provides an SDI return feature, allowing real-time monitoring of a live broadcast feed from a production switcher.
The EU-V3 also enables tally support via Ethernet, using XC protocol – when the extension unit receives a tally signal, lights on the camera body can be utilised, a tally on-screen display is shown, and it can relay the signal to an external device via Hirose 4-pin.
The lens focus position can also be displayed on-screen when using the EU-V3 – with compatible broadcast and cine-servo lenses via 12-pin communication. The focus position meter, which users can choose to display along the top or right side of the screen, allows users to register multiple focus positions on a distance scale and highlights when focus is achieved during manual operation – such as when selecting the finish line for a race.
The EU-V3 can be combined with the CN8x15 IAS S E1/P1, on both the EOS C500 Mark II and EOS C300 Mark III.