Pentax Optio 330RS Operating Manual page 51

● Viewing 3D pictures by the parallel method and cross
method
As our eyes are positioned about 6~7cm apart, there is a very
slight deviation between what we see with our right eye and what
we see with our left eye. The difference is processed by our brain
to produce a three-dimensional image. This principle is applied to
taking and viewing 3D pictures.
3D pictures can be viewed by the parallel method where the left
and right lines of vision are virtually parallel, as when looking at a
distant scene, or the cross method where the left and right lines of
vision are crossed, as when you cross your eyes. A certain
amount of practice may be necessary to view 3D pictures without
using the viewer.
● How to Assemble the 3D Image Viewer
Assemble the 3D image viewer supplied with the camera as
shown below.
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