When rendering out a
scene with a stereoscopic camera, Maya renders out the individual
left and right camera images. The images have to be composited in
order to apply the desired stereo effect.
- Open the Render View window by selecting Window
> Rendering Editors > Render View.
- In the Render View window
select Render > Render > <stereoCamera>
You have now selected
your stereo camera for rendering
- To view your render output in other stereo
modes select Display > Stereo Display