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Consummate Performance and Functionality
Factory Adjustment of Gamma
The gamma level for each
ColorEdge monitor is
adjusted at the factory.
This is accomplished by
measuring the R, G, and
B gamma values from
0 – 255, then using the
monitor's 16-bit look-up
table (LUT) to select the
Each monitor adjusted individually at the
256 most appropriate
factory. (For illustrative purposes only. Actual
tones to achieve the
adjustment is performed in a darkroom.)
desired value.
This is important
Color Seepage
because accurate, non-
fluctuating gamma
values are necessary for
the proper display of
color. If colors are not
Ideal Gamma Curve
based on specific values
and cannot be adjusted,
Uncorrected
Gamma Curve
images will be displayed
differently by different
monitors. ColorEdge
monitors provide both
precision and con-
sistency, so graphics
professionals can be sure
that the final product
will look exactly the way
they want it to. In fact,
each monitor comes with
an adjustment certificate
that certifies the mea-
surement results of the
gamma value.
Brightness and Color Uniformity with DUE
Fluctuations in brightness and chroma on different parts of the
screen are a common trait of LCD monitors. To counteract this,
EIZO incorporates a Digital Uniformity Equalizer (DUE) in all Col-
orEdge monitors. DUE utilizes the monitor's 16-bit look-up table
(LUT) with an extensive palette of 65,281 grayscale tones for each
R, G, and B to ensure a Delta-E difference of 3 or less across the
screen when the monitor leaves the factory.*
*Delta-E difference for the CG303W is 5 or less along the screen perimeter.
With Digital Uniformity Compensation
Without Digital Uniformity Compensation
Color-separated image with Delta-E*ab distribution across the screen of the
ColorEdge CG221 (gray level 128 measured)
4
Gamma Correction
ON-SCREEN IMAGE
Tonality Breakup
Smooth Grayscale Display
GAMMA CURVE
Ideal Gamma Curve
256 Tones
256 Tones
16-Bit LUT, 10-Bit Simultaneous Display
Most ColorEdge monitors offer 10-bit simultaneous color display*
from a 16-bit look-up table which means they can show more than
one billion colors simultaneously. This is 64 times as many colors as
you get with 8-bit display which results in even smoother color gra-
dations and reduced Delta-E between two adjacent colors.
*A graphics board and soft ware which support 10-bit output are also necessary
for 10-bit display.
8-bit and 10-bit image display
Input
Internal processing
Typical
8 bit
Monitor
8-bit display
16-bit
ColorEdge
8 bit
LUT
8-bit display
16-bit
10 bit
ColorEdge
LUT
10-bit display
3D LUT for Better Additive Color Mixture
All ColorEdge models
incorporate a look-up table
(LUT) for accurate color
and grayscale rendering, but
the ColorEdge CG275W,
CG245W, CG243W, and
CG223W utilize an EIZO-
developed 3D LUT. Whereas
a typical 1D LUT adjusts
color on separate tables for
each red, green, and blue, a
3D LUT accomplishes this on a single, mixed-color cubic table. A
3D LUT improves the monitor's additive color mixture (combina-
tion of RGB), a key factor in its ability to display neutral gray tones.
Short- and Long-Term Brightness Stabilization
All models come with a brightness drift correction circuit that
stabilizes the monitor's brightness level right after starting up
as well as a backlight brightness sensor that detects and coun-
teracts brightness changes in the florescent backlight that occur
over time. Furthermore, the CG275W, CG245W, CG243W, and
CG223W incorporate a temperature sensor that prevents changes
in color temperature which can be caused by fluctuations in the
ambient temperature.
Brightness Drift
Temperature Drift
Correction
Compensation
Brightness (cd/m 2 )
ColorEdge
Preset Value
Without Brightness
Drift Correction
Minutes
Output
8 bit
8 bit
10 bit
R
B
G
3D LUT image
Color temperature is maintained even as
surrounding temperature changes.
Color temperature changes with
fluctuation in surrounding temperature.
Cool
Surrounding temperature (°C)
Warm
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