Samsung Digimax GX-1S - Manual (Page 157)

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Settings During Playback
ƈ You can play back all images recorded on your SD Memory Card
successively. (p.66)
Set image display interval to [3 sec], [5 sec], [10 sec] or [30 sec].
The default setting is [3 sec].
Set in [Slideshow] in the [ Playback] menu (p.96).
ſ After setting, press the button to start slideshow.
ƃ Set in [Bright Portion] in the [ Playback] menu. (p.96)
Setting the Slideshow Display Interval