Firmware Version 1.0.5 incorporates the following improvement for the phenomenon:
1. Reduces image noise when performing high sensitivity shooting with the RF 50mm F1.2 L USM lens attached to the EOS C70 camera.
Firmware Version 1.0.5 is for lens with firmware up to Version 1.0.4. If the lens’ firmware is already Version 1.0.5, it is not necessary to update the firmware.
Preparations for the firmware update:
In the folder you downloaded are the firmware (RF028105.afu / file size: 2,883,636 bytes) and instructions on the firmware update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese). Before starting the firmware update operations, please be sure to carefully review the instructions to confirm your understanding of the firmware update procedures.
In the case of updating the firmware of RF50mm F1.2L USM using EOS C70, please check the EOS C70’s Instruction Manual.