Canon EOS 10D Software Instructions page 158

Setting RemoteCapture
1 You can use this option to take shots when there is no CF card in the camera or when the
CF card is full.
2 Saves captured images both on your computer and on the CF card in the camera.
3 Use this field to enter a file name when saving a captured image.
* The file name can consist of up to 16 characters.
4 Sets the number of digits in the sequence number that follows the file name and the
starting number used.
* If you enter [Capture] into [File Prefix] field, [5] into [Number of Digits], and [1] into [Start],
sequential file names will be assigned automatically beginning with [Capture_00001.JPG]
or [Capture_00001.CRW].
5 Displays the directory path for the folder in which files are saved.
6 Use this to select the drive on which files are saved.
7 Cancels all the specified settings, restores the previous settings and ends the procedure.
8 Applies the specified settings, closes the [Preferences] dialog box and ends the
procedure.
You can set the Hotkey for shutter release by selecting the [Release Hotkey] tab.
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