Canon RF 50mm F1.2L USM firmware v1.0.5

Canon · Released Nov 4, 2020 · First seen Jul 10, 2026

v1.0.5 is the latest firmware for the Canon RF 50mm F1.2L USM, released November 4, 2020.

What's in this update

Firmware Version 1.0.5 incorporates the following improvement for the phenomenon:

  1. Reduces image noise when performing high sensitivity shooting with the RF50mm F1.2 L USM lens attached to the EOS C70 came​ra. 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 (File name: RF028105.afu / File size: 2,883,636 bytes) and instructions on the firmware update proc​edures (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 F1.2 L USM using EOS C70, please check the EOS C70's Instruction Manual.

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