Canon EOS 30D - Manual (Page 110)

110
You can set how long the image is to be displayed on the LCD monitor
right after it is captured. To keep the image displayed, set [Hold]. To not
have the image displayed, set [Off].
1
Select [Review time].
Turn the <5> dial to select [x
Review time], then press <0>.
2
Set the desired review time.
Turn the <5> dial to select the
setting, then press <0>.
3 Setting the Image Review Time
If you press the button during the image review right after
shooting, you can change the display format.
The [Hold] setting keeps displaying the image until you press the shutter
button halfway. However, if auto power off has been set, the camera will
turn off automatically after the auto power off time elapses.
During the image review for single-shooting, you can delete the
displayed image by pressing the button and selecting [OK].
To view images captured so far, see “Image Playback” (p.113).