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EIZO ColorEdge CG277 27inch Monitor Review

Gary Wolstenholme reviews the 27inch EIZO ColorEdge CG277 with built in calibrator and 99% AdobeRGB coverage.

|  EIZO ColorEdge CG277 in Display Devices
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ColorEdge CG277

This EIZO ColorEdge CG277 display sits at the top of EIZO's range of HD ColorEdge monitors. It sports a 27” LED backlit IPS display and features a built in calibration device that can be used to calibrate and maintain the accuracy of colour produced by the display. Maximum brightness of the display is 300cd/m2 with a contrast ratio of 1000:1. Video inputs include HDMI, 29 pin DVI-D and Displayport, which supports continuous 10bit colour reproduction for smoother tones. Response time is 6ms grey-to-grey, which should be good for video work, as response times below 8ms are generally considered good by today's standards. As is the case with EIZO's other ColorEdge displays, colour reproduction is this monitor's strong suit with it being able to reproduce 99% of the AdobeRGB colour space and all of sRGB.

EIZO ColorEdge CG277 Features

The monitor is supported by an easily manoeuvrable height adjustable stand, which easily accommodates the monitor in both landscape and portrait orientation and makes finding a comfortable viewing position a pleasure. The monitor features brightness stabilisation and a digital uniformity equalizer which help to ensure colour and brightness are consistent across the whole screen as well as a fast warm up time, which means brightness and colour are completely stable after being switched on for only 7 minutes.

Being one of EIZO’s high-end monitors, this display also sports its own calibration sensor, which pops up from the bottom edge of the screen bezel. This sensor can be used independently to calibrate the screen using EIZO’s own Color Navigator 6 software, or the built in sensor can be correlated to another external colorimeter, such as the X-Rite i1, or ColorMunki, to ensure that a working environment using multiple screens all give the same colour.

EIZO-Developed ASIC at the Core – As is the case with EIZO's other Coloredge models, this display is equipped with an ASIC (application specific integrated circuit) specifically developed to aid high-precision colour processing and the production of smooth colour tones.

Individually Adjusted at the Factory - 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 256 most appropriate tones to achieve the desired value. This helps to ensure that the monitor performs within spec from the first use.

Multiple Inputs - DisplayPort, DVI-D and HDMI inputs are included for connecting to various types of graphics adapters. The HDMI input also offers direct connection with digital cameras. Two USB upstream ports allow two computers to be connected at once so it’s not necessary to reconnect the USB cable when using the ColorNavigator software and switching between the two computers. When using the Displayport connection, simultaneous 10-bit colour display is possible, via a 16bit look-up table, which means the display is capable of displaying more than one billion colours at once. This is 64 times as many colours as is possible using a standard 8-bit display, which should result in smoother colour gradations.

Key Features

  • Built-in sensor for calibration
  • 2560x1440 native resolution
  • 1000:1 contrast ratio
  • 300 cd/m2 brightness
  • DVI-D, DisplayPort, and HDMI inputs
  • Scheduled self-calibration
  • Built-in sensor can be correlated to another external colorimeter
  • Wide Colour Gamut (99% AdobeRGB)
  • On-Screen Button Guide
  • Brightness stabilisation
  • Digital Uniformity Equalizer
  • Landscape / Portrait orientation
  • 5 year warranty

EIZO ColorEdge CG277 Handling

The CX 271 sports a business like, no-nonsense design, with a bold, angular black bezel framing the large 27” panel. A weight of 13.8kg will require a sturdy desk, but the stand has no problem supporting the weight, whilst offering ease of adjustment for height, tilt and orientation. It's probably best to disconnect any cables before rotating the screen between portrait and landscape, but at least the connections are easily accessible. The power light is blue, and its brightness can be adjusted to suit your working conditions.

EIZO ColorEdge CG277 (4)

A cable tidy is included on the rear of the stand for keeping everything neat once it’s set up how you like. A cooling fan within the monitor helps to maintain temperatures to improve the consistency of the display. Although the fan can be heard in a quiet room, it isn't overly intrusive being quieter than most laptop cooling fans. When the display is turned off via the standby button on the front bezel, the CG277 consumes no electricity, which should satisfy those with environmental concerns, or those simply keeping an eye on their energy bills.

EIZO ColorEdge CG277 (2)
EIZO ColorEdge CG277 Control Buttons

You can quickly change between calibration profiles using the mode button, this allows you to switch between a plethora of built in colour modes, as well as your own calibration settings. Common settings such as sRGB and Adobe RGB are included.

EIZO ColorEdge CG277 (3)

The ports available are 29 pin DVI-D, HDMI and Displayport as well as dual upstream USB and a USB hub with two sockets. There is no way to attach a device via an analogue connection, to this display, so owners of computers using older graphics hardware (or many older Windows/Linux compatible laptops) may need to upgrade their equipment to use this monitor. A full range of cables and a hood for shading the display are provided in the box, leaving you wanting nothing, in order to set it up.

EIZO ColorEdge CG277 (1)
EIZO ColorEdge CG277 - The built-in calibration sensor pops out of the bottom part of the bezel around the screen.

EIZO ColorEdge CG277 Performance

The resolution of 2560x1440 provides plenty of working space, while text is still comfortable to read due to the large size of the screen. One minor drawback is that normal HD video is of a lower resolution, so it can appear a little fuzzy when stretched over the full size of the screen, However, this screen will accept 4K resolution input via Displayport, using its built in ASIC to resize the signal to the native resolution of the display. All this extra workspace makes checking focus on images a pleasure, and provides more than enough space for working with several programs on at the same time.

Viewing angles are 178 degrees for both vertical and horizontal, which is the same as the slightly more expensive NEC Spectraview Reference 272 27” display. Although the viewing angle is typical for a high-end display using IPS panel technology, those who are used to the older TN panel technology will be amazed by the difference this makes. Colour and brightness remain consistent, even when viewing the screen from almost any angle. To the eye, the screen appears remarkably consistent in terms of brightness and colour across its surface, and there is no flicker, even under fluorescent lighting.

Video quality is good with solid blacks and quick no visible ghosting even with rapidly changing action. There is also no discernible backlight bleed which is common on budget orientated monitors using IPS panel technology. The matt screen surface also helps to ensure reflections are kept to a minimum.

1920x1200 Eizo Test Pattern

EIZO Greyscale Test - click to view full size - please note the gamma squares at the bottom are designed to work with a resolution of 1920 x 1200, and viewed at 100%. You can also test your monitor for a number of factors using software available from EIZO.

Black and White / Greyscales - The EIZO CG277 delivers extremely impressive blacks and greyscale, with no visible colour hue in the greyscale, or grey patches.

Colour performance: We set the monitor to 120 cd/m2 brightness, with a colour temperature of 6500K and a gamma of 2.2, and measured the monitors ability to match this using an i1 Display Pro colorimeter with the supplied ColorNavigator software. 

EIZO ColorEdge CG277 Results

The contrast ratio was measured as 832:1, the colour temperature was 6502K, and brightness is also bang on the requested 120 cd/m2 requested value.

Colour performance was recorded as an Average DeltaE (ab): 1.15, with a maximum of 6.24 - the lower the number the better. It's possible to save the results of performance as a PDF document, so that you have a record of how the monitor is performing, which could be particularly important for colour critical work, or to show that your computer and monitor is set up correctly. 

CG277 Calibrationreportcolornavigatori1

We also used the i1 Display Pro to measure colour, luminance, and white point performance.

Using the i1 Display Pro and i1 Profiler Software, 6547K was the Colour temperature achieved, As the monitor is designed to be used with the Colornavigator software, exclusively, it is not possible to set luminance manually on this monitor. As a result, luminance was a little off the requested 120cd/m2 being 115 cd/m2 as requested and the native contrast ratio was measured as 481:1. Average Delta E was 0.68, the maximum deviation was 1.74 (the lower the number, the better). These results are impressively good.

EIZO Coloredge CG277 Luminance White Point Results:

CG277 Uniformnumbers
Luminance Figures
CG277 Whitepontnumbers
White Point Figures
CG277 Uniformgraph
Luminance Graph
CG277 Whitepontgraph
White Point Graph


Digital Uniformity Equalizer does a sterling job with the brightness across the screen being consistent, with the worst result a slight deviation in brightness in one corner, with most of the screen giving better uniformity. Colour temperature across the screen was also very good across the screen, with very little deviation from the centre value.

CG277 Colornavigatorwindow
  The Colornavigator software allows plenty of customisation, with calibration presets easily displayed on the left. Clicking on each changes the colour to the desired setting instantly.

Value For Money

The EIZO CG277 is available for around £1400 including VAT with a 5 year warranty. There are similarly priced monitors available that promise similar colour performance but monitors providing like-for like specification tend to be a little more expensive. For example, the NEC Spectraview Reference 272 also provides 99% coverage of Adobe RGB and built in hardware calibration, but only a three year guarantee and it costs around £1500. Taking this into account, the EIZO CG277 represents decent value for money.

EIZO ColorEdge CG277 Verdict

The ColorEdge CG277 sports the kind of colour accuracy, uniformity, adjust ability and resolution required by those doing colour-critical work for a living. Although the price may seem high at first, for your money, you get a monitor that provides plenty of desktop space for running many applications simultaneously. Although the built in calibration device may seem like an extravagance, it will save a ton of work time over its life, especially if working with more than one monitor. This display is also ergonomically designed, sporting a stand that offers a wide range of adjustments, including the ability to swivel the screen into portrait orientation.

Colour performance, and the accuracy of black and white values, are excellent, being more than good enough to satisfy the most photographers, designers and graphic artists with 99% of Adobe RGB being covered.


The EIZO delivers excellent colour performance, along with 99% of AdobeRGB coverage.


EIZO ColorEdge CG277 Pros

High image quality
99% Adobe RGB coverage
Built in hardware calibration
Portrait / Landscape Orientation
Five year warranty
Dead pixel guarantee (Full RGB pixel for 12 months)
10-bit Simultaneous display when connected via DisplayPort
Cables included in box
Displayport, HDMI  and DVI-D inputs
Ability to connect multiple computers
Built in USB hub
Consumes no power on standby

EIZO ColorEdge CG277 Cons

As this is amongst EIZO’s highest performance monitors, it is priced accordingly



EIZO ColorEdge CG277 Specifications

TFT Monitor
Screen Size (Diagonal)27inches
Device TypeLCD/TFT
TFT TechnologyLED backlit, Wide-gamut IPS (With overdrive circuit)
Resolution1440Pixels - 2560Pixels
Aspect Ratio16:9
Dot Pitch / Pixel Pitch0.2331mm
Colour Support1.07 billions from a palette of 278 trillion (maximum)
Image Contrast Ratio (Max)1000:1
Viewing Angles178, 178 (at contrast ratio of 10:1)
Input Type
  • DVI-D
  • DisplayPort
  • Mini-DisplayPort
  • HDMI
Built in SpeakersNo
USB Hub Built In
  • Yes
Power Source
Power Consumption (W)1 - 154
Box Contents
Box ContentsAC power cord, signal cable (DVI-D – DVI-D [dual link supported], Mini DisplayPort – DisplayPort), USB cable, setup guide, EIZO LCD Utility Disk (ColorNavigator software, PDF user's manual), adjustment certificate, ScreenCleaner, monitor hood

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slo0th 9 England
24 Jan 2015 9:28AM
You keep mentioning a 29-pin DVI port. Looking closely at the image, it appears to be a 25-pin as it does not have the 4 pins around the flat blade pin.
SviatA 5 Ukraine
27 Jul 2015 1:53PM
The article is pretty interesting.
I would like to know what is the exact difference between the Eizo 27" ColorEdge CX271, like here [link=][/link]
and the the CG277 line?
It seems that the CX model is better because of having an IPS screen. But I am not sure about the response time. TN should be better, then?

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