Canon PowerShot G10 pinouts
The connector/pinout information may be applied to the Canon model PowerShot G10
Canon 350D, 400D, 450D, 500D, 550D, 60D, Pentax manual shutter/focus control pinout The external trigger can be accessed with a standard 3-pole 2.5 mm jack plug. Appropriate 'official' remote controller with this plug is called RS-60 E3 or COS-60E3. The same pinout is used by all Pentax cameras
Digital cameras and camcorders with mini-usb compatible cable pinout connector at camera may look different, but mini-usb cable should work