Released Canon EU-V3 Modular Expansion Unit and Firmware Update for C500 Mark II and C300 Mark III


Along with the release of the CN8x15 IAS S E1/P1 Cine Servo Lens, Canon has released a new Modular Expansion Unit and firmware update for the EOS C500 Mark II and EOS C300 Mark III. The EU-V3 is a module that extends and supports camera functionality for multi-camera and live productions with an SDI return port, Tally support via Ethernet, a 12 pins for lenses, and much more. Let’s take a closer look at the new live streaming possibilities for C500 Mark II and C300 Mark III users!

The full-frame Canon EOS C500 Mark II was released in September 2019 (article here) and the Super35 EOS C300 Mark III a few months later in April 2020 (article here). Both cameras have been very popular among independent filmmakers and production companies around the world.

Also, they share some features like internal Cinema RAW Light recording, Dual Pixel autofocus, and a similar modular design. This modular design allows you to attach an extension unit to the back of the camera, so it adapts to your needs and shooting style.

To further expand its camera capabilities, Canon has launched a new modular expansion unit: the EU-V3.

Canon EU-V3
The new Canon EU-V3 expansion module. Photo credit: Canon

Features Canon EU-V3

Many large format sensor cameras have recently been used for live broadcasts, events and sports production. However, most cinema cameras are not intended/designed for these purposes, and they may lack specific input/output ports or crucial features for such uses. Therefore, to support particular functionality for multi-camera and live production shooting, Canon has released the EU-V3 add-on module for the EOS C500 Mark II and C300 Mark III.

Canon EU-V3
Photo credit: Canon

The expansion module screws onto the back of the camera and gives you access to:

  • One SDI return output port. The return output destination can be selected from the VIDEO, EVF-V50, MON/HDMI and SDI-OUT terminals.
  • A remote port B (RS-422).
  • An RJ-45 Ethernet port with Tally support using the XC protocol. When the expander unit receives a Tally signal, the camera housing lights can be used, an on-screen Tally display is displayed, and it can relay the signal to an external device via 4-pin Hirose.
  • An integrated V-mount battery plate (with D-TAP output).
  • A 12-pin lens terminal. With compatible lenses, the focus position of the lens can be displayed on the screen.
  • One DC OUT 12V-2A port.

As you can see, all of these additional features and ports are broadcast/live oriented. Additionally, the Canon EU-V3 is compatible with the recently launched CN8x15 IAS S E1/P1 cine-servo lens.

Canon EOS C500 Mark II and C300 Mark III – firmware update

Along with the new EU-V3 expansion module, Canon has released two firmware updates for the EOS C500 Mark II and EOS C300 Mark III. These firmware updates are introduced to enhance the capabilities of the live and mid-to-low end camera market.

Canon camera to cloud
Canon EOS C300 Mark III. Image credit: CineD

Here are all the updates:

  • XC protocol support, which supports direct control via RC-IP100 and Ethernet connections.
  • Improved autofocus functions with 120p/100p AF support, as well as face detection in slow and fast shooting modes.
  • 4-Channel Audio Display: The audio level display shows all four audio channels when this mode is selected.
  • Support for Frame.IO’s C2C (Camera to Cloud) service. We already reported this update in April this year; check out our in-depth article here to learn more about it. (
  • New Accessories and Lens Support: Enables the EOS C500 Mark II and EOS C300 Mark III to work with the CN8x15 IAS S E1/P1, EU-V3 extension module and supports the Flex Zoom lens series.

As you can see, even if you don’t shoot much in live broadcast/production, the slow motion autofocus improvements and Frame.IO C2C support might be well worth the upgrade!

Price and availability

The Canon EU-V3 add-on will soon cost $2,999. Additionally, firmware updates for the EOS C500 Mark II and EOS C300 Mark III are now available free of charge.

Canon EU-V3
Photo credit: Canon

For more information, visit Canon website here.

What do you think of this new expansion module? Which is your favorite expansion module for the C500 Mark II or C300 Mark III? Please let us know in the comments below!


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