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EF600mm f/4L IS III USM Firmware Version 1.1.2 [Mac OS X]

Content Id: 0400519202



Firmware Version 1.1.2 incorporates the following enhancement:
1. Increases the manual focus speed when the manual focus speed switch is set to 1 or 2.
*The speed when the switch is set to 3 (slowest speed) will be unchanged.
2. Improves the image stabilization effect during handheld shooting with a slow shutter speed when used with EOS 5D Mark IV, EOS 6D, or EOS R.

*In addition, this firmware enables a full-time manual focus function during Servo AF when used with the EOS-1D X Mark II. The lens must be sent to the Factory Service Center in order for this funcion to be enabled.

If the lens' firmware is already Version 1.1.2, it is not necessary to update the firmware.
The lens' firmware version can be checked from the camera's menu.

Preparations for the firmware update:
In the folder you downloaded are the firmware (File name: EF020112.lfu/File size: 2,887,680 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 procedure, please be sure to carefully read through and make sure you understand these instructions.

File information

File Name : ef600403-v112-mac.dmg
File Type : FA
File Size : 4058166KB