Pentax OPTIO Optio 750Z Operating Manual page 126

• The slideshow will continue until you press any button.
• Images that take time to display, such as TIFF images, are
displayed for two seconds before the next image is displayed.
• Pictures with a voice memo will be played through to the end
before the next picture is played back, regardless of the set
playback interval.
• Pressing the four-way controller (5) while playing back a movie
displays the next image.
• Sound files made in Voice Recording mode are not played back.
5
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Viewing Still Pictures and Movies on a TV 1p.126