Sony F900H Operation Manual page 132

You can select displaying or not-displaying for the following item.
Item
MARKER
CENTER
SAFETY ZONE
4
EFFECT
ASPECT MODE
a) The DISPLAY/ASPECT switch on the viewfinder allows you to
display or not display the corresponding item. The menu
settings are also changed according to the operation of this
switch.
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Chapter 4 Adjustments and Settings for Recording
Contents
a)
Not to display all markers, set to OFF.
To display the center marker, set to ON. If
this item is set to ON, you can select the type
of center marker (1 to 4).
To display the safety zone, set to ON. If this
item is set to ON, you can set the safety zone
range (80%, 90%, 92.5%, or 95%).
To display the effective pixel area, set to ON.
Select the aspect mode among 16:9, 15:9,
14:9, 13:9, 4:3, VAR H, VAR V, VISTA 1 or
VIST 2.
MASK To make the areas out of the selected aspect
marker dimmer, set to ON. If this item is set
to ON, you can set the mask level
(0 to 100 %).
VAR WIDTH Effective only when VAR H or VAR V is
selected at the ASPECT MODE item.
VAR H: You can change the aspect size
horizontally.
VAR V: You can change the aspect size
vertically.