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JVC GR-DVM70 Instructions Manual page 49

Digital video camera
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Operation
Switch
MENU/SET
Dial
Display
lock indicator
Power Switch
Recording
Menu
iris Lock
Use this function
when
shooting
a moving
subject,
when
zooming,
when
the subject
changes
its distance
(thus its
size in the LCD monitor
or the viewfinder),
or when you
want
to lock the brightness
level.
When
the subject
is close,
keep the iris locked.
Even when
the subject
moves
away from you, the image will
not
darken
or brighten.
SELECT OPERATION
MODE
Set the Operation
Switch
to "[_".
Then, set the
Power
Switch
to " _",
"5S"
or "_"
while
pressing
down
the Lock Button.
Pull out the view-
finder
fully
or open the L(D
monitor
fully.
ACCESS RECORDING
MENU
Press MENU/SET.
The Recording
Menu appears.
ACCESS "EXPOSURE"
Rotate MENU/SET
to move
the highlight
bar to
"EXPOSURE",
then press it.
ACCESS EXPOSURE
CONTROL
Rotate MENU/SET
to display
"MANUAL",
then press
it. "EXff"
is displayed.
CENTER SUBJECT, LOCK IRiS
Adjust
zoom
so that the subject
fills the LCD monitor
or the viewfinder,
then press and hold
MENU/SET
for
over 2 seconds.
The exposure
control
indicator
and
"Ill"
appear,
indicating
that the Ms is locked.
Press MENU/SET.
The indication
displayed
in the
upper
left corner
changes
from "EXP." to "MANUAL".
To Return
To Automatic
Iris Control...
.... rotate MENU/SET
to display
"AUTO"
then press it in
step 4. The exposure
contrr!l
indicator
and "II;
disappear.
Or, set the (-)peration
Switch
to "n
".
NOTE:
Iris lock is r_commend_d
in tile lbll_wing
situations:
• Wherl
shooting
orl a reflective
rlatural
bacl<gr_)und
such
as at the beach
or wherl
skiing.
• When
shooting
object_
under
a spotlight,
• Wher_ the subject
is backin_
away,
• When
zooming.
To Lock The Ex, posure Control And The Iris...
.... after step 4, adjust the exposure rotating MENU/SET.
Then lock the iris in step 5. For automatic loci<ins,
rotate MENU/SET to display "AUTO", then press it in
step 4. The iris becomes automatic after about 2
seconds.
Iris
Works like the pupil of the human eye. In a well-lit
environment, the human pupil contracts to keep too much
light from entering. In low lighting, the pupil dilates to
allow more light in.

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