Backward-Compatible Stereo Comparison (image) Max-Planck-Gesellschaft Caption Backward-compatible stereo introduces disparities only where they are needed. This allows content to be produced that appears almost ordinary to a viewer without stereo equipment and conveys a 3-D impression when such equipment is used. Credit Piotr Didyk, Max Planck Institute for Informatics Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.