Sony KV-40XBR700 - Manual (Page 41)

Using the Features
33
Changing the
Picture Size The zoom feature lets you vary the relative size of the left and right
pictures.
When you adjust the twin screen sizes, the TV memorizes the change.
The next time you use the Twin View function, the memorized sizes
appear.
1 Activate the picture whose
size you want to change.
2 Press V on the joystick to
enlarge the picture.
3 Press v on the joystick to
make the picture smaller.