JVC GY-HM620U Instruction Manual - Page 54

Adjusting the Iris, Manual Iris Manual Adjustment Mode, Auto Iris Automatic Adjustment Mode

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Shooting Adjusting the Iris You can adjust the aperture of the lens iris manually or automatically according to the brightness of the object. Auto Iris (Automatic Adjustment) Mode Press the [IRIS] button to set to the Auto Iris mode. The iris is automatically adjusted according to the brightness of the object. The a icon appears on the screen. 00: 00: 00.00 Jan 12, 2016 12 :34 :56 IRIS PUSH AUTO . Manual Iris (Manual Adjustment) Mode The aperture value (F-number) of the lens can be set manually. 1 Press the [IRIS] button to set to the Manual Iris mode. The a icon on the screen disappears. 2 Turn the iris ring on the lens to adjust the iris manually. The open F-number of the aperture varies according to the zoom position. Wide [W] end : F1.6 Tele [T] end : F3.0 F-number Description Decrease The subject appears brighter. The focused range becomes sharper, while the background is blurred to produce a soft image. Increase The subject appears darker. Background of image becomes focused as well. Memo : 0 Pressing the [PUSH AUTO] button during Manual Iris mode activates One Push Auto Iris mode. And holding down the [PUSH AUTO] button activates Push Auto Iris mode. 4030 20 10 0 P13000K 5.6f t ND 1 /64 AE+6 0dB F1. 6 1/ 100 . Memo : 0 Set the [FULL AUTO] switch on the camera recorder to "ON" to enter Auto Iris mode (automatic adjustment mode). The iris is automatically adjusted according to the brightness of the object. In this case, the [IRIS] switch on the camera recorder is disabled. 0 The iris open/close limit can be set in [Main Menu] B [Camera Function] B [Auto Iris Limit (OPEN)]/[Auto Iris Limit (CLOSE)] during Auto Iris. (A P99 [ Auto Iris Limit (OPEN) ] ) (A P99 [ Auto Iris Limit (CLOSE) ] ) 0 You can use the cross-shaped button (HI) on the side control panel to set the target level (brighter/darker) of the auto iris. (A P98 [ AE Level ] ) 0 The convergence speed of the auto iris can be set in the menu. (A P98 [ AE Speed ] ) One Push Auto Iris When the camera recorder is in Manual Iris mode, press the [PUSH AUTO] button to adjust the iris according to the brightness of the object. Push Auto Iris When the camera recorder is in Manual Iris mode, hold down the [PUSH AUTO] button to change to Auto Iris mode temporarily. The iris will be automatically adjusted according to the brightness of the object. About the Iris F-number Blurry effects due to "small aperture diffraction" may occur when the diameter of the iris becomes too small. When this phenomenon occurs, the Fnumber on the screen turns gray to warn you that the diffraction F-number of the iris has been exceeded. You are recommended to make appropriate use of ND filters to prevent the F-number from turning gray. 54

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Adjusting the Iris
You can adjust the aperture of the lens iris manually
or automatically according to the brightness of the
object.
.
IRIS
PUSH AUTO
Manual Iris (Manual Adjustment) Mode
The aperture value (F-number) of the lens can be
set manually.
1
Press the [IRIS] button to set to the Manual
Iris mode.
The
a
icon on the screen disappears.
2
Turn the iris ring on the lens to adjust the
iris manually.
The open F-number of the aperture varies
according to the zoom position.
Wide [W] end
:
F1.6
Tele [T] end
:
F3.0
F-number
Description
Decrease
The subject appears brighter.
The focused range becomes
sharper, while the background is
blurred to produce a soft image.
Increase
The subject appears darker.
Background of image becomes
focused as well.
Memo :
0
Pressing the [PUSH AUTO] button during
Manual Iris mode activates One Push Auto Iris
mode. And holding down the [PUSH AUTO]
button activates Push Auto Iris mode.
Auto Iris (Automatic Adjustment) Mode
Press the [IRIS] button to set to the Auto Iris mode.
The iris is automatically adjusted according to the
brightness of the object.
The
a
icon appears on the screen.
.
P 13000K
1/ 100
F1.6
0
dB
AE
+
6
ND 1 /64
12:34:56
Jan 12,2016
00:00:00.00
4030 20
10
0
5.6ft
Memo :
0
Set the [FULL AUTO] switch on the camera
recorder to “ON” to enter Auto Iris mode
(automatic adjustment mode). The iris is
automatically adjusted according to the
brightness of the object.
In this case, the [IRIS] switch on the camera
recorder is disabled.
0
The iris open/close limit can be set in [Main
Menu]
B
[Camera Function]
B
[Auto Iris Limit
(OPEN)]/[Auto Iris Limit (CLOSE)] during Auto
Iris.
(
A
P99 [ Auto Iris Limit (OPEN) ] )
(
A
P99 [ Auto Iris Limit (CLOSE) ] )
0
You can use the cross-shaped button (
HI
) on
the side control panel to set the target level
(brighter/darker) of the auto iris.
(
A
P98 [ AE Level ] )
0
The convergence speed of the auto iris can be
set in the menu.
(
A
P98 [ AE Speed ] )
One Push Auto Iris
When the camera recorder is in Manual Iris mode,
press the [PUSH AUTO] button to adjust the iris
according to the brightness of the object.
Push Auto Iris
When the camera recorder is in Manual Iris mode,
hold down the [PUSH AUTO] button to change to
Auto Iris mode temporarily. The iris will be
automatically adjusted according to the brightness
of the object.
About the Iris F-number
Blurry effects due to “small aperture diffraction”
may occur when the diameter of the iris becomes
too small. When this phenomenon occurs, the F-
number on the screen turns gray to warn you that
the diffraction F-number of the iris has been
exceeded.
You are recommended to make appropriate use of
ND filters to prevent the F-number from turning
gray.
54
Shooting