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Chapter 7 Location and Function of Parts and Controls 122HDC-900/950/930 Series Product Information Manual
k IRIS RELATIVE (iris relative) button
When the IRIS/MB ACTIVE button is lit, the iris
adjustment mode can be selected with this button.
Press and light up the button for Relative mode or
press so that it goes dark for Absolute mode. When the
IRIS/MB ACTIVE button is not lit, Relative mode is
automatically selected and this button is not operative.
7-10-3 Iris/master black control block (RCP-751)
a MASTER BLACK display
Displays the current master black setting in the range
from –99 to +99.
b MASTER BLACK control
Manually adjust the master black level. The setting is
displayed in the MASTER BLACK display.
c IRIS/MB ACTIVE (iris/master black active)
button
Press and light up this button to enable the iris/master
black control block of the panel. When the PANEL
ACTIVE button is pressed, this button also lights. If you
press this button so that it goes dark, the panel will be
locked, preventing accidental misoperation.
d IRIS RELATIVE (iris relative) button
When the IRIS/MB ACTIVE button is lit, the iris
adjustment mode can be selected with this button.
Press and light up the button for Relative mode or
press so that it goes dark for Absolute mode. When the
IRIS/MB ACTIVE button is not lit, Relative mode is
automatically selected and this button is not operative.
e f-number display
Displays the f number of the current iris setting. When
the iris is closed, “CL” is displayed.
f EXT (lens extender) indicator
Lights when the lens extender is used.
g SENS (sensitivity) control knob
Used for manual iris adjustment in Absolute mode.
This control is not operative when Relative mode is
selected.
h COARSE control knob
Used for manual iris adjustment.
i IRIS control
When the AUTO button is not lit, you can adjust the iris
manually by turning the control. When the AUTO
button is lit, the reference value for automatic iris
adjustment can be set in a range of ±1f with this
control.
Iris adjustment functions
Relative mode
(RELATIVE button
lit)
Absolute mode
(RELATIVE button
not lit)
IRIS lever
(RCP-750)/
IRIS control
(RCP-751)
Adjusts the iris with
relative values
within 1/4 of the
total range from
OPEN to CLOSED.
Adjusts the iris
within the variable
range set by the
SENS and
COARSE
COARSE
control
Adjusts the total
range from OPEN
to CLOSED in rela-
tive values.
Sets the lower limit
for CLOSED.
SENS
control
Does not function.
Sets the upper limit
for OPEN accord-
ing to CLOSED
value set by the
COARSE control.
EXT
IRIS/MB
ACTIVE
AUTO
COARSE
SENS
OPEN
CLOSE
RELATIVE
MASTER
BLACK
IRIS
qa AUTO button
1 MASTER BLACK display
2 MASTER BLACK control
3 IRIS/MB ACTIVE button
4 IRIS RELATIVE button
5 f-number display
6 EXT indicator
7 SENS control knob
8 COARSE control knob
9 IRIS control
q; Iris gauge