Canon EOS 30D Instruction Manual page 85

Differences Between <d> and <1> (Full Auto)
In both modes, the automatically-set shutter speed and aperture
combination are the same.
In the <d> mode, you can set or use the functions below, but not in the <1> mode.
Shooting Settings
AF mode selection
AF point selection
Drive mode selection
ISO speed setting
Metering mode selection
Program Shift
Exposure compensation
AEB
AE lock with <A> button
Depth-of-field preview
Clear all camera settings
Custom Function (C.Fn)
Clear all Custom Functions
Sensor cleaning
Flash Settings (Built-in flash)
Flash On/Off
FE lock
Flash exposure compensation
About Program Shift
In Program AE mode, you can freely change the shutter speed and
aperture combination (program) set by the camera while maintaining the
same exposure value. 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 is displayed.
Program shift is canceled automatically after the image is captured.
If you use a flash, you cannot use program shift.
If "30"" and the maximum aperture blink, it indicates
underexposure. Increase the ISO speed or use flash.
If "8000" and the minimum aperture blink, it indicates
overexposure. Decrease the ISO speed or use an ND
filter (optional) to reduce the amount of light entering
the lens.
Flash Settings (EX-series Speedlite)
Image-Recording Settings
Manual/stroboscopic flash
High-speed sync (FP flash)
FE lock
Flash ratio control
Flash exposure compensation
FEB
2nd-curtain sync
Modeling flash
RAW and RAW+JPEG selection
Picture Style selection/customize/registration
Color space selection
White balance selection
Custom white balance selection
White balance correction
WB bracketing
Color temperature setting
d Program AE
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