If the default white balance settings are not sufficient, you can
adjust the white balance manually.
Colour temperature can be adjusted by positioning the white
point within the CIE chromaticity diagram. The system permits
you to place the white point inside a grid positioned in the neu-
tral colour zone. Moving along the“horizontal”lines changes the
related colour temperature, with low temperatures on the right
(thus increasing the red content) and high temperatures on the
left of the graph (thus increasing the blue content). Points along
the yellow horizontal line represent the colours on the black
body curve. The colour temperature along the“vertical”lines is
constant but differs to a lesser or higher degree from the black
body curve. This means that by selecting the points on the hi-
gher part of the graph you will increase the blue component.
On the contrary, by selecting points in the lower part of the
graph, the purple component increases.
GAMMA CORRECTION
Determines the system’s response to the grey scale, empha-
sising or attenuating the different grades of brightness (blacks,
dark, medium, light grey, whites) in the projected image.
The projector has a range of gamma functions which enable
you to display any image to the best effect for the type of
video source, the ambient lighting and your subjective pre-
ferences.
There are 4 sets of gamma curves: Standard (ST), Enhanced
SIM2 (EN) and Graphics (GR), User. The Standard curve has
been defined for general use, and is set for videocameras,
digital cameras, and for viewing films or photos on your PC.
The Enhanced set is suitable for watching movies. The Graphi-
cs set is suited to displaying synthetic graphics (PC, CAD, PC
presentations, etc.).
User enables you to define your own curve. You can thus select
the coefficient which determines the curve.
Values from 1.5 to 2.2 allow you to emphasise the detail of dark
images, but reduce overall contrast.
USER 1, 2, 3
: use this option if none of the others are satisfactory.
The User formulas give you the ability to continuously adjust the
picture size horizontally and vertically.
With progressive HDMI signals, for all resolutions, the "User"
adjustment can be used only in decreasing mode: the incre-
ment mode is intentionally set to value "0".
With progressive HDMI signals, at any level of resolution, you
can only adjust “personalised” settings downward: incremen-
tal adjustment has been intentionally inhibited.
COLOUR TEMPERATURE
Changes the colour balance of the image.
You can define the primary colour (red, green, blue) positioning
by using 5 default settings. These settings are:
The default settings are:
NATIVE (the machine’s native primary colours)
HDTV, EBU, SMPTE-C, primary colours defined by the standards
AUTO, mode that applies one of the standard settings descri-
bed above.
For each of the settings listed in column “1 RGB” there are 9
default white balance adjustments.
The default settings are:
STANDARD applies a certain white balance depending on the
standard selected in column “1 RGB”;
HIGH - MEDIUM - LOW (default white balance levels);
NATIVE (the machine’s native white balance);
D75 - D65 - D50 - C standard CIE illuminants;