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Adobe RGB Coverage |
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Expanded Color Space Meets Professional Needs
 Graphics professionals are well
aware that a totally digital workflow
and the ability to do soft proofing
results in higher efficiency and lower
costs. Many also want to switch to
space-saving LCD monitors, but are
hesitant to do so because of concerns
regarding the color accuracy required
for professional color work. EIZO's solution
is the ColorEdge CG221: an LCD monitor that covers the Adobe
RGB color space. It thus encompasses not only the sRGB color space,
widely supported by many computer monitors, operating systems and
digital cameras, but also the ISO-coated and US web-coated CMYK
color spaces used in printing. This ultra-high-performance monitor
finally provides all the color reproduction capabilities graphics professionals
have been seeking, in the compact LCD format.
Advantages of Adobe RGB
In order to realize the advantages of soft proofing, a color management
system for sharing accurate colors among photographers, graphic
artists and printers is a necessity. The most efficient way to achieve
this is for all parties to use a standardized color space with a wide range of colors. The ColorEdge CG221 now makes it possible to adopt
the Adobe RGB extended color space, which has become the de facto
standard for professional color processing. It ensures guaranteed color
reproduction across all digital platforms, providing a color management
environment that fully supports soft proofing, from the photography
stage to final CMYK printing.
(A) Adobe RGB (white wire frame) encompasses the ISO coated color space
(multicolor solid).
(B) sRGB (white wire frame) does not cover many of the green, cyan, and
yellow areas of the ISO coated color space (multicolor solid).
Color Management
A common color space throughout the workflow lets you switch from
hardcopy proofing to soft proofing.
By covering the Adobe RGB color space, the ColorEdge CG221
is not subject to influence from the OS color engine or software, and
allows final color checks in Adobe RGB. This offers a great advantage
over sRGB monitors, whose smaller palette is not capable of accurately
reproducing colors in certain areas of the spectrum, notably emerald
greens and cyans. Retouching images with these monitors requires
numerous printouts to achieve accurate color matching. By enabling onscreen
retouching and color confirmation, the ColorEdge CG221 makes
your work faster, easier and more accurate.
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Brightness and Color Compensation with DUE |
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Fluctuations in brightness and chroma on different parts of the screen is a common trait of LCD monitors. To counteract this, the ColorEdge CG221 incorporates EIZO’s digital uniformity equalizer (DUE). DUE utilizes the monitor's 12-bit look-up table (LUT) with an extensive palette of 4,081 grayscale tones for each R, G, and B, and internal calculation accuracy of 16-bits to ensure a Delta-E difference or 3 or less across the screen when the monitor leaves the factory.
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With Digital Uniformity Compensation |
Without Digital Uniformity Compensation |
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Color-separated image with Delta-E*ab distribution across the screen (gray level 128 measured) |
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16-bit Processing |
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The 16-bit internal calculation of the CG221 produces grayscale rendering that is on a par with highend
CRT monitors.The result is not only a much greater degree of detail in dark areas, but overall uniformity of brightness and color throughout the entire screen. |
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| With 10-bit processing, the error rate is high in low tonal areas during calculation. With 16-bit processing, accuracy is significantly improved resulting in fewer conversion errors. |
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Emulation Function
To take full advantage of the 12-bit LUT and 16-bit internal processing capabilities, EIZO has equipped the ColorEdge CG221 with an emulation function. Simply by obtaining the ICC profile of another monitor and using EIZO's ColorNavigator software, the ColorEdge CG221 can emulate its color characteristics. This is useful when another monitor is the 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.
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Factory Adjustment of Gamma |
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Each ColorEdge CG221 monitor is adjusted at the factory to a gamma level of 1.8. 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 4,081-tone palette to select the 256 most appropriate tones to achieve the 1.8 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 CG221 provides both precision and consistency, so you can be sure that the final product will look exactly the way you want it to.
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22.2-Inch Screen Supports 1920 × 1200 Resolution |
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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.
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| Conventional monitor: working space and tool palettes overlap. |
ColorEdge CG221: full working space and tool palettes are displayed simultaneously with no overlap. |
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High Brightness with No Loss of Detail |
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With conventional LCD monitors, when the brightness is raised, small details in the image are lost, but the ColorEdge CG221 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.
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Auto Brightness Control |
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This EIZO-patented circuit stabilizes brightness soon after startup or coming out of power save mode. Additionally, this circuit eliminates brightness fluctuation by detecting changes in the surrounding backlight temperatures and automatically adjusting the divergence to the brightness default setting or user-defined level. |
