Canon EOS RP Instruction Manual page 305

Differences Between < d > and < A > Modes
In < A > mode, many functions, such as the AF method and metering mode,
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are set automatically to prevent spoiled shots. The functions you can set
are limited. On the other hand, with < d > mode, only the shutter speed and
aperture are set automatically. You can freely set the AF method, metering
mode, and other functions.
Program Shift
In < d > mode, you can freely change the shutter speed and aperture
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combination (Program) set automatically by the camera while maintaining the
same exposure. This is called Program shift.
To shift the program, press the shutter button halfway, then turn the < 6 > dial
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until the desired shutter speed or aperture is displayed.
Program shift will be canceled automatically when the metering timer ends
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(exposure setting display turns off).
Program shift cannot be used with flash.
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If the "30"" shutter speed and the lowest f/number blink,
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it indicates underexposure.
Increase the ISO speed or use flash.
If the "1/4000" shutter speed and the highest f/number
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blink, it indicates overexposure.
Lower the ISO speed or use an ND filter (sold
separately) to reduce the amount of light entering the
lens.
Program AE
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