Precision color reproduction, Bit processing, Emulation function – Eizo CG220 User Manual

Page 9: Factory adjustment of gamma, High brightness with no loss of detail

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background image

9

Conventional monitor: working

space and tool palettes overlap.

ColorEdge CG220: full working space

and tool palettes are displayed simulta-

neously with no overlap.

Precision Color Reproduction

14-Bit Processing

The ColorEdge CG220 incorporates a powerful new
EIZO-developed ASIC (Application Specific Integrated
Circuit) with 14-bit color processing capability (16
times more accurate than 10-bit). This allows a larger

number of grayscale increments, for grayscale rendering that is on a par
with high-end CRT monitors. The result is a much greater degree of
color detail, especially in dark areas and shadows.

Emulation Function

To take full advantage of the 14-bit internal processing capabilities,

EIZO has equipped the ColorEdge CG220 with an emulation func-
tion. Simply by obtaining the ICC profile of another monitor and using
EIZO’s ColorNavigator software, the ColorEdge CG220 can emulate
its color characteristics. This is useful when another monitor is the

14-bit v. 10-bit processing

Error Rate (%)

0

2

1

0

-1

-2

-3

2

1

0

-1

-2

-3

32

64

96

160

192

224

255

128

0

32

64

96

160

192

224

255

128

Error Rate (%)

Internal 14-Bit Processing

Internal 10-Bit Processing

Tones (0 – 255)

Tones (0 – 255)

With 10-bit processing, the error rate is high in low tonal areas during calculation. With

14-bit processing, accuracy is significantly improved resulting in fewer conversion errors.

standard monitor in a workflow, when different models are used in a
multi-monitor setup, or for a remote proofing environment where the
client, designer and printer want to be sure that their various monitors
are displaying color the same way.

Factory Adjustment Of Gamma

Each ColorEdge CG220 monitor is adjusted at the factory to a

gamma level of 2.2. This is accomplished by measuring the R, G and B
gamma values from 0 to 255, then using the monitor’s Look-Up Table
(LUT) with its 1,021-tone palette to select the 256 most appropriate
tones to achieve the 2.2 value.

The benefit of factory adjustment is that precise, non-fluctuating

gamma values are necessary for the accurate display of colors. If colors
are not based on specific values and cannot be adjusted, images will be
displayed differently by different monitors. The ColorEdge CG220 pro-
vides both precision and consistency, so you can be sure that the final
product will look exactly the way you want it to.

22.2-Inch Screen Supports 1920 × 1200 Resolution

The extra-wide 22.2-inch screen supports 1920 × 1200 resolution

(16:10 aspect ratio), meaning that it can display a two-page A4 spread
with no clipped edges. In an application such as Adobe

®

InDesign

®

, the

tool palettes can be displayed at the same time without overlapping.

High Brightness With No Loss Of Detail

With conventional LCD monitors, when the brightness is raised,

small details in the image are lost, but the ColorEdge CG220 gives
you the best of both worlds — high brightness and sharp detail. This
remains true even when viewing from off-center, thanks to the LCD
panel’s 170° viewing angle and minimal color shift.

Monitor for Emulation

Obtain target monitor’s

ICC profile

Emulate colors

of target monitor

Select ICC profile of target

monitor in ColorNavigator

CG220

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