Samsung PL64E8000GFXZP - Manual (Page 256)

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
perspective of the on-screen image.