Filter
Top Products
7
Chapter 7 Location and Function of Parts and Controls 121HDC-900/950/930 Series Product Information Manual
7-10-2 Iris/master black control block (RCP-750)
a MASTER BLACK display
Displays the current master black setting in the range
from -99 to +99.
b MASTER BLACK RELATIVE button
When the IRIS/MB ACTIVE button is lit, the master
black adjustment mode can be selected with this
button.
Press and light up the button for Relative mode, or
press and turn it dark for Absolute mode. When the
IRIS/MB ACTIVE button is not lit, Relative mode is
automatically selected and this button is not operative.
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 AUTO button
Press and light the button to automatically adjust the
iris according to the amount of input light. When this
button is lit, the reference value for automatic iris
adjustment can be set in a range of ±1f with the iris
control. If you press the button when lit, it goes dark
and manual iris adjustment is enabled.
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 Master black control ring
Turn to manually adjust the master black level.
j IRIS control lever
When the AUTO button is not lit, you can adjust the iris
manually by moving the lever. When the AUTO button
is lit, the reference value for automatic iris adjustment
can be set in a range of ±1f with this lever.
See the following table “Iris adjustment functions.”
IRIS/MB
ACTIVE
AUTO
RELATIVE
COARSE
SENS
OPENCLOSE
RELATIVE
MASTER
BLACK
EXT
IRIS
1 MASTER BLACK display
2 MASTER BLACK RELATIVE
button
3 IRIS/MB ACTIVE button
4 AUTO button
5 f-number display
6 EXT indicator
7 SENS control knob
8 COARSE control knob
9 Master black control ring
q; IRIS control lever
qa IRIS RELATIVE button