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Firmware Notice: EOS C100 Mark II: Firmware Version


Firmware Version incorporates the following fix:

Fixes the phenomenon in which the aperture adjustment may not operate as expected when using the control dial on the grip unit when certain EF lenses* are attached. This occurs with EOS C100 Mark II cameras running Firmware Version

* EF 8-15mm f/4L Fisheye USM
  EF 11-24mm f/4L USM
  EF 16-35mm f/2.8L III USM
  EF 16-35mm f/4L IS USM
  EF 24-105mm f/4L IS II USM
  EF 24-70mm f/2.8 L II USM
  EF 24-70mm f/4L IS USM
  EF 24mm f/2.8 IS USM
  EF 28mm f/2.8 IS USM
  EF 35mm f/1.4L II USM
  EF 35mm f/2 IS USM
  EF 40mm f/2.8 STM
  EF 50mm f/1.8 STM
  EF 70-200mm f/2.8L IS II USM
  EF 70-300mm f/4-5.6L IS USM
  EF 100-400mm f/4.5-5.6L IS II USM
  EF 100mm f/2.8L Macro IS USM
  EF 200-400mm f/4L IS USM Extender1.4x
  EF 300mm f/2.8L IS II USM
  EF 400mm f/2.8L IS II USM
  EF 400mm f/4 DO IS II USM
  EF 500mm f/4L IS II USM
  EF 600mm f/4L IS II USM
  EF-S 15-85mm f/3.5-5.6 IS USM
  EF-S 18-135mm f/3.5-5.6 IS
  EF-S 18-55mm f/3.5-5.6 III
  EF-S 18-55mm f/3.5-5.6 IS II
  EF-S 24mm f/2.8 STM
  EF-S 55-250mm f/4-5.6 IS II


  • Firmware Version is for updating Cinema EOS C100 Mark II cameras running firmware version - If your camera’s firmware is already version, it is not necessary to update the firmware. Once the camera is updated to the latest version, it cannot be restored to a previous version.
  • For further information, please refer to the latest version of the unit’s Instruction Manual that is released with the firmware update.


Download Firmware Version for the EOS C100 Mark II.

If you have not already done so, please register the EOS C100 Mark II. By registering, we will be able to notify you via email about future announcements.

This information is for residents of the United States and its five territories only. If you do not reside in the USA or its five territories, please contact the Canon Customer Support Center in your region.

Thank You,
Customer Support Operations
Canon U.S.A., Inc

Contact Information for Inquiries 
Canon Customer Support Center
Phone:1-855-CINE-EOS (toll free)
For additional support options: pro.usa.canon.com/support