RF24-105mm F4 L IS USM Instructions. Download drivers, software, firmware and manuals for your Canon product and get access to online technical support resources and troubleshooting. RF24-105mm F4-7.1 IS STM. View other models from the same series. Drivers, Software & Firmware. Manuals. Product Specifications. FAQ. Product Notices. Back to top. Company. 2 days ago · When I tried to enable "Lens Optical IS" in the menu, the option is greyed out and the message "This function is not compatible with the current lens". This is when I attach any of my IS capable Canon Lenses with the latest firmware. RF24-70 F2.8. RF 14-35 F4. RF 70-200 F2.8. EF 24-105 F4 with the 0.71x mount adaptor. 5kzNZN.