Canon EOS R6 Advanced User Guide - Page 100

Caution If the "30"" shutter speed and the lowest aperture value blink, it indicates underexposure. Increase the ISO speed or use flash. If the "1/8000" shutter speed and the highest aperture value blink, it indicates overexposure. Lower the ISO speed or use an ND filter (sold separately) to reduce the amount of light entering the lens. Note Differences between < > and < > modes In < > mode, many functions, such as the AF method and metering mode, are set automatically to prevent spoiled shots. The functions you can set are limited. On the other hand, with < > mode, only the shutter speed and aperture value are set automatically. You can freely set the AF method, metering mode, and other functions. Program shift In < > mode, you can freely change the combination (program) of shutter speed and aperture value set automatically by the camera while maintaining the same exposure. This is called Program shift. With Program shift, you can press the shutter button halfway, then turn the < > dial until the desired shutter speed or aperture value is displayed. Program shift will be canceled automatically when the metering timer ends (exposure setting display turns off). Program shift cannot be used with flash. 100