Hitachi V-21W - Manual (Page 42)

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Iris adjustment
Auto, manual and instant auto are selectable.
Instant auto functions during manual operation to
adjust the iris automatically while the button is
pressed.
1. Automatic
Set the lens Iris switch to A. The iris is
adjusted automatically to accommodate
camera video signal changes.
2. Manual
Set the switch to M. The iris is adjusted by
manually turning the iris ring.
3. Instant automatic
With the Iris switch at M, pressing the button
instantly and automatically adjusts the iris.
Notes
1 Set the iris response (peak/average) from the Function 1 menu screen.
2 While the menu screen is not displayed, fine adjust the auto iris by pressing the buttons.
The adjustment range using the buttons is indicated below.
-1.0 -0.8 -0.6 -0.4 -0.2 0 +0.2 +0.4 +0.6 +0.8 +1.0
Closed about 1 F stop. Opened about 1 F stop.
The adjustment can be used if portions of interest in the scene are too dark or
too light.
3 Zebra pattern
When set to on, a zebra pattern appears on the viewfinder screen. The pattern can be used as a reference for
manual iris adjustment.
IRIS:0
Viewfinder screen