Canon EOS 5D instruction manual Differences Between d and 1 Full Auto, About Program Shift

d: Program AE

If the “30"” shutter speed and the maximum aperture blink, it indicates underexposure.

Increase the ISO speed or use flash.

If the “8000” shutter speed and the minimum aperture blink, it indicates overexposure.

Lower the ISO speed or use an ND filter (sold separately) to reduce the amount of light entering the lens.

Differences Between <d> and <1> (Full Auto)

With <1>, many functions such the AF mode, drive mode, and metering mode are set automatically to prevent spoiled shots. The functions you can set are limited. With <d>, only the shutter speed and aperture are set automatically. You can freely set the AF mode, drive mode, and other functions.

About Program Shift

In the Program AE mode, you can freely change the shutter speed and aperture combination (Program) set by the camera while maintaining the same exposure. This is called Program shift.

To do this, press the shutter button down halfway, then turn the <6> dial until the desired shutter speed or aperture value is displayed. Program shift is canceled automatically after the picture is taken. Program shift cannot be used with flash.

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