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Changes:
This firmware update (Version 2.1.8.1 00) incorporates the following improvements:
1. With the CN7×17 KAS S/E1*1, CN-E18-80mm T4.4 L IS KAS, or CN20x50 IAS H/E1*1 attached, the following functions are available.
2. Supports WFT-E8.
3. Supports peripheral illumination correction when the EF24-105mm F4L IS Ⅱ USM is attached.
*1 The firmware of the lenses also need to be updated.
*2 For CN7×17 KAS S/E1, support has already been provided in Version 2.1.7.1.00 or later.
Caution:
Firmware Version 2.1.8.1.00 is only for EOS C300 cameras which have Firmware Version 2.1.2.1.00 - 2.1.7.1.00 with the Dual Pixel CMOS AF Feature Upgrade applied. If your camera’s firmware is already version 2.1.8.1.00, it is not necessary to update the firmware. Once the camera is updated to the latest firmware version, it cannot be restored to a previous version.
If the EOS C300 camera does not have Dual Pixel CMOS AF Feature Upgrade applied, please download Firmware Version 1.1.8.1.00.
Further information: