Ross Acuity 4410AR-020, Setup Manual

Page: 80 / 121

Color Correction
Color correction is performed by either Processing
Amplifiers (Proc Amps) in the HSL (Y-Cr-Cb) color
space or by RGB Color Correctors in the RGB color
space. Both Proc Amps and RGB Color Correctors allow
you to apply color correction to video sources on the fly
to input video signals, entire buses, or aux bus outputs.
•
Input Based Correction
— color correction is
applied to the video input regardless of which ME or
Aux Bus it is selected on. Input-based color correction
is not stored in switcher memories. Only supported
on the MultiProcessor Input board.
• ME Input Based Correction — color correction is
applied to all the video inputs to the ME. Not required
with the MultiProcessor Input boards.
• ME Bus Based Correction — color correction is
applied to the output of the assigned bus. Unlike the
other color correction types, bus-based color
correction is stored and recalled with memories. This
allows you to include a color correction element as
part of an effects dissolve.
•
Aux Bus Based Correction
— color correction is
applied to the output of an Aux Bus. Like input-based
color correction, Aux Bus color correction is not
stored in switcher memories.
Color correction is additive, allowing you to apply any
combination of Proc Amp and RGB Color Corrector
based adjustment to a video signal on the input, as well
as on the bus. If multiple color corrections are applied,
the input-based correction is applied first, and the
bus-based correction is applied after that.
Proc Amp Color Correction
The Proc Amp video correction allows you to adjust the
gain, black level, and gamma of the video signal.
To Apply Proc Amp Video Correction to a
Source
Both the Input Proc Amp Mode menu and Bus Proc
Amp Mode menu work the same. The rest of this
procedure shows the Input Proc Amp Mode menu, but
the procedures apply to both.
Tip: You can revert the color correction back to the default
settings by pressing the Default button.
1. Double-press the source button for the input video
source, or bus, that you want to apply the Proc Amp
to.
2. Press Input Proc Amp or Bus Proc Amp to
select the type of proc amp that is applied.
•
Input Proc Amp
— input-based color
correction. The input BNC that is displayed on
the menu is used.
• Bus Proc Amp — bus-based color correction.
The ME and bus that is displayed on the menu
is used.
3. (Optional: Input Proc Amp Only) Use the Color
Gamut
buttons to set the color gamut of the source.
Tip: If the color gamut or dynamic range differ from what
the switcher is operating in they will be converted.
Note: There are restrictions on the types of HDR and color
gamut conversion you can do, and you can adjust the
scaling of the conversion. Refer to
High Dynamic Range
(HDR) and Wide Color Gamut (WCG) Conversion on page
83 for more information.
• BT.709 — color gamut recommended for HD
video signals.
• BT.2020 — wide color gamut recommended for
UHDTV1 video signals.
4. (Optional: Input Proc Amp Only) Use the Dynamic
Range
buttons to set the dynamic range of the
source.
• SDR — Standard Dynamic Range.
•
HLG
— Hybrid Log Gamma.
•
PQ
— Perceptual Quantizer.
•
S-Log3
— Sony
®
S-Log3.
5.
Press
Gain
and use the
Gain
,
Chroma Gain
, and
Lum Gain knobs to adjust the gain.
•
Gain
— adjust the luminance and chrominance
gain simultaneously.
• Chroma Gain — adjust only the chrominance
gain.
• Lum Gain — adjust only the luminance gain.
6. Press Cr Adjust and use the Cr Gain and Cr
Offset
knobs to adjust the red color difference
component.
• Cr Gain — adjust the gain of the red color
difference.
•
Cr Offset
— adjust the offset of the red color
difference.
7.
Press
Cb Adjust
and use the
Cb Gain
and
Cb
Offset knobs to adjust the blue color difference
component.
•
Cb Gain
— adjust the gain of the blue color
difference.
•
Cb Offset
— adjust the offset of the blue color
difference.
80 • Color Correction — Acuity Setup Manual (v9.2)