Firmware incorporates the following enhancement:
• Reduces color unevenness when capturing images using long (Bulb) exposure mode with the EOS Ra.
*Manual focus cannot be activated during exposure. And performing zoom operations during exposure, the subject may be out of focus.
This firmware update is for lenses equipped with firmware versions older than RF24-105mm F4 L IS USM Firmware Version 2.0.1, RF24-70mm F2.8 L IS USM Firmware Version 1.0.4 and RF70-200mm F2.8 L IS USM Firmware Version 1.0.5. If the lens’s firmware is already latest version, it is not necessary to update the firmware.
The firmware version of the lens can be checked from the camera's menu screen.
Preparations for the firmware update:
In the folder you downloaded are the firmware (File name: EFxxxxx.lfu / File size: x,xxx,xxx 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 confirm your understanding of these instructions.
RF 24-105f4L IS USM:
RF 24-70f2.8L IS USM:
RF 70-200f2.8L IS USM: