Canon PowerShot G10 - Manual (Page 276)

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By using the RS60-E3 Remote Switch (sold separately), you can avoid
any camera shake that may occur when you press the shutter button.
The remote switch is also useful when using slow shutter speeds.
Be sure to stabilize the camera by using a tripod, for example, when
using the remote switch. Also, be sure to read the operating
instructions supplied with the remote switch before use.
Using the Remote Switch (Sold Separately)
1
Make sure the camera is turned off.
2
Connect the remote switch.
1. Open the terminal cover.
2. Insert the remote switch’s plug.
3
Press the release button on
the remote switch to shoot.
Bulb photographs cannot be taken with this camera.