Samsung UN46ES7500FXZA E-Manual page 271

Adjust 3D effects like perspective and
depth for your preferred 3D viewing
experience.
3D Effect: Adjust the perspective and
depth settings. If you select Auto,
adjust the perspective and depth
settings automatically in accordance
with the 3D input source. If you select
Manual, you can adjust the perspective
and depth you want.
3D Perspective: Adjust the overall 3D