Pentax Optio 450 Operating Manual page 69

b How to view 3D pictures using the 3D image viewer
Print out the pictures so that they are about 11cm or 12cm wide and
place the divider of the 3D image viewer in the middle of the two.
As the distance between the left and right eyes differs from person to
memo
person, some people may have difficulty obtaining a three-dimensional
effect even when looking at prints that are the same size. It may be
especially difficult if the pictures are very large or very small. Try
different sizes until the right effect is achieved.
• Never look at the sun through the 3D image viewer.
Caution
• Do not leave the 3D image viewer where it is exposed to direct
sunlight as this may lead to fire.
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