Super telephoto reach
Advanced image stabilisation
Quiet and smooth focus for video, fast for stills
281.8 mm when stowed
For direct control over Tv/Exposure Compensation/ISO settings
When using this lens with or without the extenders, the camera's AF area is reduced to approximately 40% horizontal and 60% vertical coverage of the image area.
In order to use this lens with or without the extenders on the EOS R, EOS Ra, or EOS RP, a compatible version of firmware is required. Download the latest camera firmware from the Canon website and install it on your camera.
"For best results it is recommended using Canon camera applications to process RAW images shot with this lens either with or without the extenders.
When using a PC please download the latest Digital Photo Professional and Picture Style Editor from the Canon website. In case of using tablet please download Digital Photo Professional Express from App Store."