JVC GR-DVL257 specifications 44 EN, Exposure Control, Iris Lock

Set the Power Switch to “ ” while pressing down the Lock Button located on the switch.

Press EXPOSURE. The exposure control indicator appear.

44 EN

Exposure Control

Manual exposure adjustment is recommended in the following situations:

•When shooting using reverse lighting or when the background is too bright.

•When shooting on a reflective natural background such as at the beach or when skiing.

•When the background is overly dark or the subject light.

1

2

3 Rotate the MENU/BRIGHT wheel towards “+” to brighten the image, or towards “–” to darken the image. (maximum ±6)

4 Press the MENU/BRIGHT wheel in. Exposure adjustment is complete.

To Return To Automatic Exposure Control . . .

.... press EXPOSURE twice or set the Power Switch

to “”. (If EXPOSURE is pressed once, the camcorder will enter the exposure adjustment mode again.)

To Brighten The Subject Quickly . . .

.... press BACKLIGHT. is displayed and the

subject is brightened. If pressed again, disappears and the brightness returns to the previous level.

•+3 exposure has the same effect as the BACKLIGHT Button.

•Using BACKLIGHT may cause the light around the subject to become too bright and the subject to become white.

•Backlight compensations is also available when the Power Switch is set to “ ”.

NOTE:

Backlight, spotlight (
pg. 39) compensation and “SNOW” (
pg. 39) have no effect when the manual Exposure Control mode is engaged.

FOR RECORDING (cont.)

Iris Lock

Use this function in the following situations:

•When shooting a moving subject.

•When the distance to the subject changes (so its size in the LCD monitor or the viewfinder changes), such as when the subject is backing away.

•When shooting on a reflective natural background such as at the beach or when skiing.

•When shooting objects under a spotlight.

•When zooming.

When the subject is close, keep the iris locked. Even when the subject moves away from you, the image will not darken or brighten.

Before the following steps, perform steps 1 and 2 of “Exposure Control”.

3 Adjust zoom so that the subject fills the LCD monitor or the viewfinder, then press and hold the MENU/BRIGHT wheel for over 2 seconds. The exposure control indicator and “ ” appear.

Press the MENU/BRIGHT wheel in. “ ” changes to “ ” and the iris is locked.

Iris lock indicator

BACKLIGHT Button (3)	3
EXPOSURE
Button (2)
MENU/BRIGHT Wheel

F

F

O

Y

ALP

Power Switch

To Return To Automatic Iris Control . . .

.... press EXPOSURE twice so that the exposure

control indicator and “ ” disappear. Or, set the Power Switch to “”.

To Lock The Exposure Control And The Iris . . .

.... after step 2 of “Exposure Control”, adjust the

exposure rotating the MENU/BRIGHT wheel. Then lock the iris in step 3 of “Iris Lock”. For automatic locking, press EXPOSURE twice in step 2. The iris becomes automatic after about 2 seconds.

Iris

Like the pupil of the human eye, it contracts in well- lit environments to keep too much light from entering, and dilates in dim environments to allow in more light.