JVC GY-HM850CHE, Instructions Manual

Page: 58 / 220

Adjusting the Iris
You can adjust the aperture of the lens iris manually
or automatically according to the brightness of the
object.
.
Manual Iris (Manual Adjustment) Mode
The aperture value (F-number) of the lens can be
set manually.
1
Set the [IRIS A/M] mode selection switch on
the lens to “M”.
The camera recorder switches to the Manual
Iris mode, and 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 supplied lens varies with
the zoom position.
F
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
Even while in the Manual Focus mode, pressing
the [IRIS] button on the lens or the user button
assigned with the [One Push Iris] function
switches the camera recorder to the One-push
Auto Iris mode.
0
Even while in the Manual Focus mode, pressing
and holding the [IRIS] button on the lens or the
user button assigned with the [One Push Iris]
function switches the camera recorder to the
Push Auto Iris mode.
Auto Iris (Automatic Adjustment) Mode
The iris is automatically adjusted according to the
brightness of the object.
1
Set the [IRIS A/M] mode selection switch on
the lens to “A”.
The camera recorder switches to the Auto Iris
mode, and the
a
icon appears on the screen.
.
P 13000K 1/ 100
F1. 6
0
dB
AE + 6
ND 1 /64
12 :34 : 56
Jan 24 , 2014
00: 00: 00.00
5 . 6f t
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, operation of the [IRIS A/M] mode
selection switch and [IRIS] button on the lens 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
P109 [ Auto Iris Limit (OPEN) ] )
(
A
P109 [ 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
P109 [ AE Level ] )
0
The convergence speed of the auto iris can be
set in the menu.
(
A
P109 [ AE Speed ] )
58
Adjusting the Iris
Sh
ooting