Samsung LED 7450 E-Manual page 88

Thereareseveralrestrictionswhen using 3D TV:
o Runningthe SmartHubautomaticallydeactivates3D viewing.
P_P cannot be used.
CertainPictureoptions are disabled.
IRType Samsung3D Active Glassesand third-party 3D glassesare not supported.
The left and right 3D imagesmay initially overlapwhenthe TV is turnedon. It takesa moment
for the display to optimize andthe overlappingto go away.
The 3D Active Glassesmay not work properlyif there is another3D productor electronicdevice
turnedon nearthe glassesor TV. If there is a problem,keepother electronicdevicesas far away
as possiblefrom the 3D Active Glasses.
Whetheror not 3D video is displayedin true HD is usuallydeterminedby the quality of the
content.