The plastic Pentax O-3DV1 viewer
was supplied with the Pentax Optio 430RS camera. The Optio 430RS had the
capability to take stereo pictures (using the cha-cha method) in either
cross-eyed or parallel mode.
Whilst the viewer was lightweight
and collapsible, the lenses were superb, being made from ground glass.
The picture to be viewed was placed on a flat surface and the viewer
then placed on top.
Pentax Optio 430RS
The preview screen of the Pentax
Optio when in 3D mode
The final image from the Pentax Optio 430RS
Review of the
Pentax Optio 430RS on Steves Digicams web site