Canon optura50 Instruction Manual page 83

You can save your original images, or the images and sounds contained in the
supplied software (ZoomBrowser EX for Windows or ImageBrowser for
Macintosh) to the setting options [MY IMAGE] and [MY SOUND]. For details,
refer to the Digital Video Software Instruction Manual.
E
Retain the original data of the still image you have set as the start-up image on
your computer or removable disk.
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