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Section 7 – Video Input Menu
Copyright 2007-2017 Lumagen, Inc Radiance Pro, Rev 052517 19
The Gamma parameter modifies the effect of the “Gamma Factor” in the CMS menu. Increasing Gamma
increases the resulting Gamma, and can help make the image appear to have a higher contrast ratio.
Selecting a negative number for Gamma can increase the brightness of dark areas if they are too dark. The
range for the Gamma control is -10 to 10 (default = 0).
The HDR Intensity Mapping Black control adjusts the black level before the HDR Intensity mapping
in the pipeline (the CMS memory Black is in the 1D LUT that is after the 3D LUT). Reducing the Black level
may improve the perceived contrast ratio of the image, or if reduced too much may “crush” portions of the
image near black. The range for the HDR Intensity Mapping Black control is -7 to 7 (default = 0).
The HDR Mapping parameter command is:
MENU → Input → Options → HDR Mapping → OK
You can also access the input HDR Mapping parameters by pressing the

key, if the Menu, or Info Screen, is
not on-screen. Once in this menu press OK to accept changes or EXIT to discard changes.
Black and White Levels
To set the input’s black-level (also referred to as brightness) and white-level (also referred to as contrast)
using the Lumagen controls, use a test pattern generator or select a PLUGE pattern from a test pattern disc.
Note that the input memory black and contrast are intended to compensate for variations in video source
levels, not to calibrate the display. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
(Black, White)
Colorspace
Since all inputs are HDMI by default the appropriate color space is automatically selected (“Auto” mode) for
standard-definition “Bt.601,” high-definition “Bt.709,” or UHD “Rec 2020.” The “Auto” mode is generally
best, but some upscaling sources do not convert the color format to Bt.709 as they should and so “Bt.601”
would be manually selected for these if they are programmed to output HD formats. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
Colorspace
Color Decoder
NOTE:
Set the display’s Color and Hue to their default values.
Normally not used if the Color-Gamut is calibrated using the Radiance CMS system, unless the source has an
error in its color decoder. Use Radiance internal color-bar pattern, a test pattern generator, or a test disc
test pattern, to set color, Hue, color, and Hue offsets, if necessary. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
Color Decoder
Y/C Delay
Adjust the horizontal Chroma timing in relation to Luma. Range is +/- 1.9375 pixels in 1/16 steps. It is
suggested that you use a Y/C-delay calibration image from a test pattern generator of test disc to calibrate
the Y/C-delay. The C
B
and C
R
channels are adjusted independently. The command is:
MENU
→
Input
→
In Configs
→
[Resolution]
→
[#]
→
Picture
→
YC Delay
CUE Filter
This filter can minimize Chroma issues forsources with a Chroma up-sample error. The command is:
MENU → Input → In Configs → [Resolution] → [#] → Picture → CUE Filter
Input Sizing
Input sizing can be used to compensate for active image size differences between sources.
Note:
The input size command does not affect the output size or position.
Rather, it affects w hich input pixels are captured for processing.