Canon EOS 6D Mark II Mode D'emploi page 124

3 Setting the Image-Recording Quality
The number of possible shots is based on Canon's testing standards and an
8 GB card.
The maximum burst during continuous shooting is based on Canon's standard
testing SD card (Standard: 8 GB, High-speed: UHS-I 16 GB) and testing
standards (<o> High-speed continuous shooting, 3:2 aspect ratio, ISO 100,
Standard Picture Style).
The file size, number of possible shots, and maximum burst will vary
depending on the subject, card brand, aspect ratio, ISO speed, Picture
Style, Custom Functions, and other settings.
122