Samsung UN55ES8000G E-Manual page 275

product or electronic devices turned
on near the glasses or TV. If there
is a problem, keep other electronic
devices as far away as possible from
the 3D Active Glasses.
ΠBe sure to stay within the viewing
angle and optimum TV viewing
distance when watching 3D pictures.
Otherwise, you may not be able to
see 3D effects properly.
ΠThe ideal 3D viewing distance is