Canon has released updated firmware for the following RF-mount lenses: 100-300mm f/2.8, 400mm f/2.8, 600mm f/4, 800mm f/5.6 and 1200mm f/8.


The RF 100-300mm f/2.8 L IS USM lens is one of five Canon telephoto lenses to gain improvements through new firmware. (Source: Canon.)

Firmware Version 1.0.6 for the RF 100-300mm f/2.8 L IS USM lens incorporates the following enhancements.

  1. Improves focus, making it more easily achievable, even when performing fast zooming operations.
  2. Improves the Panning Assist control feature for 2nd and subsequent images captured during continuous shooting when using the electronic shutter.

Firmware Version 1.0.6 for the RF 400mm f/2.8 L IS USM lens, Version 1.0.6 for the RF 600mm f/4 L IS USM lens and Version 1.0.4  for the RF 800mm f/5.6 L IS USM lens and RF 1200mm f/8 L IS USM lens improves the Panning Assist control feature for 2nd and subsequent images captured during continuous shooting when using the electronic shutter.

The new firmware is available to download at Canon’s Australian website.