Samsung UN60ES7500FXZA - Manual (Page 59)

highly recommend you use your TV's
16:9 mode most of the time.
N If you have set Double ( à , Œ )
mode in PIP (Picture-in-Picture), you
cannot adjust the Picture Size .
16:9 : Sets the picture to the 16:9 wide
screen format.
Zoom1 : Provides moderate
magnification of the picture. Sides, top,
and bottom are cut off.
Zoom2 : Provides larger magnification