Test EIZO EV2740X: Reference for 4K businessmonitors
27-inch 4K display delivers a convincing image representation with 100% sRGB as wellas an IPS panel with excellent viewing angles and a contrast ratio of over 2000:1
11.09.2023, Simon Blohm

Introduction
EIZO has not focused on monitors with 4K resolution within the EV Office series so far.
But this month, two new models were released: the EV2740X and the EV3240X. Both areavailable in black and white. The black models end with BK (black), while the white ones
have the suffix WT (white). In our test, we will look at the EV2740X-BK.

EIZO novelties in two color variants: EV2740X-BK and EV2740X-WTWhat innovations have the monitors received? The most striking feature is certainly the
new twisted stand, whose design can be considered particularly creative for EIZO. We
were thrilled by the new look in any case. The FlexStand arm also now allows heightadjustment with two instead of three elements, which we think also benefits the looks.
The USB-C port has also received an update and now offers a power supply with 94
watts.
Otherwise, the EIZO EV2740X features a 27-inch display with IPS technology, a contrastof 2000:1, and a native 4K resolution of 3840 × 2160 pixels (163 ppi). The manufacturer
specifies a maximum brightness of 350 cd/m², and the sRGB color space is supposed tobe covered by 100%.
With the Picture-by-Picture mode, the docking station including LAN port as well as
numerous ergonomic features and energy-saving functions, the EIZO FlexScan EV2740X
is ideally suited for use in the business environment or home office.
If you want to learn more about the product range and the features of the EIZO officemonitors of the EV series, you can find information in our report "Excellent ergonomic
monitors". In addition, we recommend our article "Are 4K monitors without an alternativein the desktop sector?
The 27-incher is available in stores for around 1,000 Euros. Detailed information about
the features and specifications can be found in the data sheet of the EIZO EV2740X-BK.

Scope of delivery
The scope of delivery might look a bit sparse for a 1,000 euro monitor at first glance.
Besides a printed setup guide, only cables for power and USB-C are included. At least
one additional cable, whether DisplayPort or HDMI, would have been desirable.
However, you should not forget the five-year warranty with on-site replacement service,
which alone represents a considerable monetary value. This also includes a support thatis not only available, but may even take care of problems very persistently.

Scope of delivery
The PDF manual can be easily downloaded from the product website. EIZO is one of the
few manufacturers that still publish manuals that really deserve this name.
Furthermore, the useful additional software should be mentioned. With Screen InStyle,power consumption, color, brightness and other settings can be easily managed. With
Screen InStyle Server, system administrators can control monitors and PCs connected in
the network. Drivers and color profiles were not yet available at the time of testing.
However, color profiles for 6500 K and 5000 K exist and should be available soon.

Optics and mechanics
The display and accessories are securely packed in the carton. EIZO already uses 100%
recycled material for packaging and transport padding. The transport padding isreminiscent of an oversized egg carton. The contents can be conveniently removed via
the wide opening of the carton. The screen is encased in a protective sleeve and stillneeds to be connected to the stand. It is connected to the stylish stand without tools with
two wing screws. We were thrilled by the curved look of the stand in any case; it is a
visual upgrade.

Stand from below
Stylish stand for a secure hold
The stand is then pushed into place on the back of the display. To do this, the upper partof the stand is placed flat and then pushed slightly upwards until it locks into place. To
keep the screen stably in place, rubber studs are attached to the bottom of the stand.
They prevent the screen from slipping when turned sideways and allow safe andcomfortable handling with only one hand.

Connection of stand leg and display The
stand leg can be conveniently released again by pressing the button
The installation of a VESA mount with 100 x 100 mm is also provided. The necessary
mounting holes are directly accessible after dismantling the stand.

Standing leg from behindStanding leg from front
With a total of 8.2 kg, the EIZO EV2740X is relatively heavy. This also applies to thedisplay without the stand at 5.5 kg. Although weight alone is not a criterion for quality, it
gives the current review sample a positive impression of high quality. The slim screen
looks seamless and already conveys a feeling of value during handling during assembly.
There are no creaking or groaning noises perceptible. In addition, the display is perfectly
stabilized and does not wobble even when operating the OSD. That's exactly how it
should be!

Front view in the highest position
Rear view in the highest position
The frame is 1 mm at the sides and top. In the lower part, the height is about 7 mm toprovide enough space for the electrostatic controls. The additional frame, which is visible
during operation due to the unused display area, has a width of approximately 6 mm,
while it is 8 mm at the bottom.
Thanks to the now two-stage design, the stand leg can be adjusted in height by 19 cm
and lowered all the way to the foot. The distance to the table surface is 1.5 cm. The twostage design is not noticeable in handling. Height adjustment is possible from the verybottom to the very top in a single fluid motion, although it is a bit more sluggish in thelower range.

Front view in lowest position
Rear view in lowest position

EIZO once again presents an exemplary implementation of the other ergonomics
features, both in terms of scope and mechanics. The tilt is flexibly adjustable from -5 to+35 degrees. The screen allows a lateral 90° rotation to the right and left. Furthermore,
the 90° swivel into portrait mode (pivot) is also precise and only requires a small amountof force. The rotation is only possible to the right. Height adjustment is still possible by
6.5 cm in portrait mode.

Maximum tilt angle to the front
Maximum tilt angle to the rear

Pivot view from front
Pivot view from rearMaximum rotation to the left
Maximum rotation to the right
The EIZO EV2740X has a cable holder so that the cables do not hang down haphazardly.
It is already connected to the base unit and can be opened with a bit of lateral pressure.
When closing, the plastic lug clicks back into place. The space for bundling the cables isgenerous.

Cable management: cover open
Cable management: cover closed
In the EIZO EV2740X, the power supply is integrated into the case and has a standalone
power switch, which allows the device to be completely disconnected from the mains.
Ventilation slots are found on the back below the EIZO logo. However, heating on theback is not noticeable even after a few hours of use.
The recess can simultaneously serve as a practical handle for transport and be used tooperate the ergonomics functions.

EIZO logo and ventilation slots on the back side

Technology
Operating noise
We did not notice any operating noise with the EIZO EV2740X. The monitor is absolutely
silent in standby mode as well as during operation, and that regardless of the brightness
setting. However, it should be noted that the noise development might be subject to acertain series dispersion. Therefore, this assessment does not necessarily apply equallyto all devices of the same series.

Power consumption
Manufacturer

MeasuredOperation maximum

186 W

29,2 W

Operation minimum

k. A.

10,8 W

Operation typical

16 W

-

140 cd/m² (77 %)k. A.

17,2 W

Energy saving mode (standby)

0,35 W

0,4 W

Switched off (Soft-off)

0,3

0,3 W

Switched off (power switch)

k. A.

0W

Measured values without additional consumers (loudspeaker and USB)
EIZO states a maximum consumption of 186 watts in the spec sheet. This is a veryhonest value since it refers to the demand at maximum brightness and the operation of
all signal and USB ports.
However, according to our measurements, the power consumption at maximum
brightness level is only 29.2 watts. The effect of the soft-off button is only minor. We
already measure a consumption of 0.4 watts in standby. Thanks to the dedicated powerswitch, the power consumption can also be capped completely.
At 140 cd/m² at the workstation, the meter displays 17.2 watts. The efficiency at thisbrightness calculates to an excellent 1.6 cd/W.

Connections
In terms of signal inputs, the EIZO EV2740X can boast two HDMI inputs, one DisplayPort
and one USB-C port (with DisplayPort Alternate Mode). All interfaces support HDCP 2.3.
The USB-C port also serves as a data upstream and for powering external devices with
94 watts. A maximum of 4K (3840 x 2160) with 59.997 Hz can be displayed via
DisplayPort and USB-C, while 60 Hz is achieved via HDMI. Furthermore, a LAN port (RJ45) and three USB ports are available, including one USB-B (upstream) and two USB-A 3(downstream) with 5 Gbps.

Connections
On the left side, there is another USB-C port (with DisplayPort alternate mode and 15
Watts PD), an additional USB-A port (downstream) with 5 Gbps as well as a headphonejack and a stereo mini-jack for connecting external speakers.

Other connections laterally in the bay window

Operation
The EIZO EV2740X has electrostatic controls for control. The speakers and brightness
sensor are also integrated into the slim front bezel. However, it is important to be carefulwhen operating them, as you may accidentally touch the display surface with your finger,
which can leave unsightly fingerprints. However, this may be the trade-off made for ascreen with an almost bezel-less design, which is ideal for multi-screen systems.
Furthermore, the software offers a convenient way to control the OSD.

Electrostatic controls
Otherwise, the operation with the touch keys is also good. They are very responsive andcan be operated comfortably and reliably. There is no acoustic feedback. The small,stroke-like elevations are hardly recognizable. However, it is enough to touch any control
element, which causes the individual functions to be displayed on the screen surface.
EIZO remains true to the tried and tested operating concept. However, we now find theoperation via 5-way joystick a bit more pleasant.

Speaker and sensor
The very discreet power LED is located to the right of the power button. When themonitor is in use, the LED glows white; in idle mode, the color changes to orange. If the
LED illumination bothers you, you can deactivate it completely in the OSD.

White illuminated LED in operating modeIn idle mode, the color changes to orange

OSD
You can first call up a quick selection with any keystroke. Signal source, display modes,
EcoView and volume/brightness can be accessed without a detour via the menu. The"Menu" key takes you directly to the main menu, which only has five levels.
The display duration of the OSD cannot be adjusted. After about 40 seconds, the OSD
closes automatically.

Menu entry and quick selection (Screenshot: EIZO manual)

The functions offered are clearly and simply structured for a business monitor and areequally professional and user-friendly. With many manufacturers, the functions that areavailable as direct keys are also found in the actual main menu. EIZO goes its own way
here. Only the brightness and the user mode can also be set in the main menu under"Color". This makes sense because you would otherwise always have to go back to thequick selection first.
All important settings for software calibration, including color temperature and gamma
controls with exact numerical values, are available. Above all, the set values actually
deliver what they claim to in our measurements.
Signal source: Here you can choose between USB-C, DisplayPort, HDMI 1, HDMI 2 and
PbP.
Color modes: User1, User2, sRGB, Paper, Movie and DICOM are available. The User
modes are used to set a user-specific screen mode, and DICOM can display digitalimages for medical purposes based on DICOM Part 14. However, the EIZO EV2740X is
not intended for diagnostic purposes.
EcoView settings: The power saving option, CO2 reduction and eco power level arechecked here. Auto EcoView can be turned on and off. The ambient light sensor
automatically detects the ambient brightness and adjusts the screen brightness
automatically. EcoView Optimizer 2 can be turned on and off. Here, the monitor
automatically adjusts the screen brightness - according to the white level of the input
signal.
The ergonomics of the EIZO EV2740X are not only supported by the mechanics, but also
by the electronic components. A sensor continuously measures the changes in ambient
light and optimizes the screen's brightness accordingly. It also takes the user preference
into account, which is available in the form of the set brightness value. This serves as astarting point for adjusting the luminance almost unnoticed when the ambient lightchanges. This offers the dual benefit of relieving eye strain while saving energy andcosts. EIZO even integrates subtle color changes into the OSD to show the energy
savings achieved.
Brightness and volume: Under this menu item, the brightness can be adjusted from 0
to 100. The volume of the speakers or headphones can be adjusted from 0 to 30.
Menu: The key takes you to the main menu, which contains five levels.

OSD: Main menu (Screenshot: EIZO manual)

Color: Under this menu item, brightness (0 to 100), contrast (0 to 100), color
temperature ("Off" or from 4000 K to 10 000 K in steps of 500 K, including 9300 K),
gamma (1.8, 2.0, 2.2 and 2.4), overdrive ("Enhanced", "Standard" and "Off"), hue (-50
to 50), saturation (-50 to 50) and gain settings (RGB values from 0 to 100) can be made.
At the same time, it is possible to reset the stored values for each mode. Not all menu
items are available for every mode. For example, in DICOM nothing can be changed atall, and in sRGB only the brightness value can be set. In the two modes "User1" and"User2", on the other hand, all values are adjustable.
EIZO almost manages a precision landing with the preset gamma values, but
measurement tolerances are of course possible as well. Here are the default values andour measurement results behind them in brackets: 1.8 (1.79), 2.0 (1.99), 2.2 (2.19) and2.4 (2.39). These are excellent results!
Signal: "Window selection" refers to the page on which the signal is to be displayed in
PbP. Under "Image Expansion", the scaling ("Automatic", "Full Screen", "Aspect Ratio"and "Point by Point") can be set, whereby the automatic only works on the HDMI inputs.

With "Sharpness" (-2 to 2) it is possible to optimize the font sharpness. However, thisfunction is disabled in the native resolution because nothing has to be optimized here. In
addition, the input color space ("Automatic", "YUV 4:2:2", "YUV 4:4:4", "YUV" or "RGB")
and the input range ("Automatic", "Total" and "Limited") can be set.
Settings: This item offers options for menu rotation (0°and 90°) and energy saving (Onand Off) - the latter should be set to "On" because otherwise the monitor will not switch
to standby mode and will stay on. Then, information is displayed in the upper rightcorner that there is no signal. On top of that, there are power control LEDs ("On" and"Off"), USB selection for DisplayPort as well as HDMI 1 and HDMI 2 (USB-C or USB-B)
and sound selection PbP (left and right). Furthermore, the monitor can be reset to factory
settings here.
Languages: A total of nine languages are available (English, German, French, Spanish,
Italian, Swedish, Japanese, Simplified Chinese and Traditional Chinese).
Information: In this menu item, you can check the model name, serial number,
firmware version, usage time and input signal information.

Administrator Settings
Pressing the power button and the left button simultaneously for two seconds during
power-on opens the "Administrator Settings" menu. Further settings are available here.
This menu is only available in English, no matter which language setting was selected in
the OSD.
Auto Input Detection: When the monitor is connected to multiple PCs and a particular
PC enters power saving mode or no signals are received from the monitor, it
automatically switches to the port through which signals are received. The function canbe turned on or off. By default, it is turned off and also does not work in PbP mode.

Compatibility Mode: This can be turned on or off. By default, it is deactivated and canbe activated, for example, when the positions of windows and icons change, when themonitor is switched on or off, or after exiting the energy-saving mode. Even if the mouseor keyboard does not activate the PC from sleep mode, "Compatibility Mode" should beswitched on.
USB: "On" enables the USB port for displaying video signals via USB-C, the docking
station function, USB Power Delivery and Screen InStyle (monitor control). "Off" disables
the USB port so that no USB peripherals can be used.
Ethernet: The LAN socket can be activated or deactivated here.
Signal Format: The type of signal that can be displayed on the monitor can be changed.
The default setting is "HBR3/USB 3.2 Gen 1" (the maximum USB transfer speed is 5Gbps). When connecting to a computer that does not support HBR3, the setting can be"HBR2/USB 2.0" (the maximum USB transfer speed is 480 Mbps).
It is also possible to select version 1.2 or 1.4 for DisplayPort. For HDMI 1 and 2, thesetting "4K UHD 60 Hz" or "4K UHD 30 Hz" is available.
On-Screen Logo: Here you can select whether the EIZO logo should be displayed atstartup.

Key Lock: To prevent changes to the settings, the control switches on the front of themonitor can be locked. The options are "Off", "Menu" and "All".
Apply: The settings are applied and the Administrator Settings menu is closed.

Image quality
The panel bezel and the surface of the panel are matte and effectively anti-reflective.
However, light from the side or even a viewer wearing light-colored clothing createsclearly visible reflections on the screen with very dark screen content. The surface looks
reflective from an extremely lateral position.
During reset (factory settings), the EIZO EV2740X sets the following values:
Image mode:

User1

Brightness:

86

Contrast:

50

Gamma:

2,2

Color temperature:

6500 K

RGB:

97/100/91

The Auto EcoView and EcoView Optimizer 2 energy-saving options have been disabled.
These values were used for the following assessment at factory settings.

Resolution
The 4K resolution (3840 x 2160 pixels) is distributed over 27 inches and thus offers 163
ppi. The term ppi stands for "pixel per inch". This unit of measurement describes theresolution of an image, but does not provide information about the output size.
In the native resolution, the font display is too small. Windows recommends scaling to150%, which is about 109 ppi and a font size like a 27-inch WQHD monitor (2560 x
1440). If you find the font too small, you can go to 175% with 93 ppi, which roughly
corresponds to a 24-inch display with Full HD resolution (1920 x 1080). The font display
is sharp and can still be adjusted to the user's needs via ClearType under Windows if
necessary.

Grayscale
The gray balance of the EIZO EV2740X already makes an excellent impression ex-works.
The grayscale levels look completely neutral. The brightest levels can be distinguishedcompletely and the darkest up to and including level 5. Both halves of the screen lookcompletely identical.

Test image grayscale display
Even the finest gray gradients are reproduced extremely precisely and seamlessly. No
color distortions or banding effects are visible. The EIZO EV2740X certainly owes thisoutstanding result to the use of a 14-bit LUT (look-up table) for internal processing. This
corresponds to an actual display of 1.06 billion color gradations. In other screens, thespecification is often based on an 8-bit calculation that is upgraded by FRC ("Frame Rate
Control").
In contrast to EIZO's CG series monitors, only an 8-bit signal can be set in the graphics
card driver on the output side of the EV2740X. Nevertheless, the higher internal precision
proves to be advantageous when processing fine gray and color gradients.

The screen already shows excellent viewing angle stability in the grayscale. It isparticularly impressive horizontally. The display remains virtually unchanged in both thebrightest and darkest areas. The usually occurring strong brightening in dark areas is notobserved here.

Illumination
The left photo shows a completely black image roughly as seen with the naked eye in acompletely darkened room; here the noticeable weaknesses become visible. The rightphoto with a longer exposure time, on the other hand, highlights the problem areas andonly serves to show them more clearly.

Illumination with normal exposure
Illumination with extended exposureWhen looking from the center, brightenings can be seen in the corners, but they are very
subtle here. They also seem to be purely caused by the viewing angle, since they
completely disappear when the affected areas are viewed vertically.

Glow effect horizontal
Moving further away from the central seating position, the usual effect of the IPS gloss
becomes visible, being most noticeable at diagonal viewing angles. This is a typicalbehavior of an IPS panel.

Brightness, black level and contrast
The measurements are performed after a calibration to D65 as white point. If possible, alldynamic controls are deactivated. Due to the necessary adjustments, the results arelower than when performing the test series with native white point.
The measurement window is not surrounded by a black border. The values can therefore
be compared more with ANSI contrast and reflect real-world situations much better than
measurements of flat white and black images.

Brightness and contrast gradientWith native white point, we achieve a maximum brightness of about 347 cd/m², whichcorresponds to the manufacturer's specified mark of 350 cd/m². However, the luminancecan be reduced so much that you effectively cannot see anything on the monitor
anymore and our measuring device cannot determine any values. A sensible use of thebrightness control usually only starts from a value of 40% (23 cd/m²). The graphic showsthe entire brightness range. We only considered the contrast values from 10% in the
average calculation.
As with virtually all devices in the EV series, the brightness increase of the EIZO EV2740X
is not linear as usual, but progressive. The maximum brightness is completely sufficientin any case. However, usual working brightness levels are only reached from settings
above the 70% mark.
The manufacturer specifies the contrast ratio of the IPS panel with 2000:1. According toour measurements, it is a very good 2286:1 after calibration. The average value of ourmeasurements is 1751:1 and the maximum value is 2330:1. This is an outstanding value
for an IPS panel.

Image homogeneity
We examine the image homogeneity on the basis of four test images (white, neutral
tones with 75 %, 50 %, 25 % brightness), which we measure at 15 points. This results inthe averaged brightness deviation in % and the likewise averaged delta C (i.e. thechromaticity difference) in relation to the respective centrally measured value. The
perception threshold for brightness differences is about 10 %.

Brightness distribution in %Color homogeneity in Delta C
In terms of color homogeneity, the EIZO EV2740X performs first-rate on average as wellas in terms of maximum deviation (delta C average: 0.81, delta C maximum: 1.48). The
maximum deviation of 10% in the brightness distribution is also very good. On average,
the brightness distribution is 5.3%, which is still a hair's breadth away from a goodresult.

Coating
The surface coating of the panel has a great influence on the visual assessment of image
sharpness, contrast and sensitivity to ambient light. We examine the coating with themicroscope and show the surface of the panel (foremost film) in extreme magnification.

Coating of the EIZO EV2740X
Coating reference image
Microscopic view of the subpixels, with focus on the screen surface: The EIZO EV2740X
has a matte surface with subtle microscopically visible indentations for diffusion.

Viewpoint
The manufacturer's specification for the maximum viewing angle is 178 degrees
horizontally and vertically. These are the typical values for modern IPS and VA panels.
The photo shows the screen of the EIZO EV2740X at horizontal viewing angles of ±60
degrees and vertical ones of +45 and -30 degrees.

Horizontal and vertical viewing angles
IPS panels are generally characterized by excellent viewing angle stability. However, theEIZO EV2740X shows a remarkable performance even within IPS technology. The viewing
angle can only be described as perfect in both horizontal and vertical directions. Colors
and color saturation remain unchanged from all viewing angles.

Interpolation
A sharpness slider is present in the OSD under "Signal", but it is disabled in the native
resolution, which is completely correct. The sharpness can be changed in interpolated
resolutions to improve the writing sharpness. In our estimation, this is also the only
sensible application purpose for a sharpness control.
For input signals that deviate from the native resolution, the device offers the options"Full screen" (distorted if necessary), "Fixed aspect ratio" (undistorted) and also a pixelprecise 1:1 display. However, the "Automatic" setting can only be used with the HDMI
inputs.

Test graphics native, full screen
Test graphics 1920 x 1080, full screen

Text rendering native, full screen
Text rendering 1920 x 1080, full screen
The interpolation capabilities of the EIZO EV2740X are excellent. This applies to thescaling options as well as the implementation. Sharpness at native resolution is very
good, as expected. At 1920 x 1080, you can see that the font is displayed bolder. Color
fringing does not occur.
In all interpolated resolutions, the readability of texts and the reproduction of the test
graphics are - according to the scaling level - good to very good. The unavoidable
interpolation artifacts are low. Even texts with bold letters remain legible.

SignalDistortion-free,maximum area-filling
reproduction

Unscaled playback

SD (480p)

Yes

Yes

SD (576p)

Yes (PC), No (Chromecast) Yes

HD (720p)

Yes

Yes

HD (1080p)

Yes

Yes

Ultra HD, 4K

Yes

Yes

PC (5:4)

Yes

Yes

PC (4:3)

Yes

Yes

PC (16:10)

Yes

Yes

PC (16:9)

Yes

Yes

Color rendering
EIZO promises 100% sRGB color space coverage for the EV2740X. The following graphics
show the color space coverage in User1 mode (6500 K) after the software calibration. It
is clearly visible that the sRGB color space is covered by 100%. However, the color gamut
strongly exceeds the sRGB color space. A missing color gamut is indicated by a black
grid, a larger coverage by a light gray grid.

Coverage of sRGB color space, 3D slice 1
Coverage of sRGB color space, 3D slice 2
The EIZO EV2740X also has an sRGB mode, which should ideally limit the somewhat
extended color space accordingly. As can be seen in the following graphics, this succeeds
exceptionally well. The sRGB color space coverage is 98%.

Coverage of sRGB color space in sRGB preset, 3D slice 1
Coverage of sRGB color space in sRGB preset, 3D slice 2

The following table summarizes the results for the factory preset and after software
calibration.
Cover infactory
preset99 %Coverage after
calibration

Adobe RGB-

74 %ECI-RGB v2

-

67 %

DCI-P3 RGB

-

82 %

ISO Coated v2(FOGRA39L)

-

91 %

Color space
sRGB

100 %

Measurements before calibration and profiling
Color mode: Custom (factory default)
We have summarized the explanations for the following charts for you: Delta E deviation
for color values and white point, Delta C deviation for gray values, and gradation.

Gray balance in factory setting, "User1" picture modeThis result can be used as a reference and is impressive for a business monitor. The graybalance of the EIZO EV2740X is already very good ex-works. The color temperature of
6400 K is just below the default of 6500 K. The gamma (average: 2.17) is practicallyexactly at the target. The gamma curve is perfect.
The detailed test results can be downloaded as a PDF file.

Comparison sRGB mode with sRGB working color space

Color reproduction in factory setting, picture mode "sRGB
For the sRGB color space, we have already seen how perfectly EIZO restricts it in thesRGB preset. The results are also excellent in terms of gray balance (Delta C Average:
0.3; Delta C Range: 0.66) and color values (Delta E94 Average: 0.36). The gamma curve
averages 2.18 and has a perfect gradient.
The detailed test results can be downloaded as a PDF file.

Measurements after calibration and profiling
For the following measurements, the device was calibrated and profiled from Quato iColor
Display. The target brightness was 140 cd/m². D65 was chosen as the white point.
Neither represents a generally valid recommendation. This also applies to the choice of
gradation, especially since the current characteristic is taken into account anyway as partof color management.
The following values were set for the calibration in the OSD:
Image mode:

User1

Brightness:

77

Contrast:

50

Gamma:

2.2

Color temperature:

From

RGB:

97/100/94

The necessary adjustments to the RGB gain control are thus minimal. EIZO has RGB
values of 97, 100 and 91 in the "6500 K" mode. Only blei blue increased the value from91 to 94.

Profile validation

Profile validation
The EIZO EV2740X does not show any noticeable drifts or unsightly non-linearities. The
matrix profile describes its condition very accurately. A repetition of the profile validation
after 24 hours did not reveal any significantly increased deviations. All calibration targets
were met. The gray balance is very good (delta C average: 0.45), only the range isslightly increased with 1.96 delta C, which leads to a good score overall. The color values
are very good (Delta-E94-Average: 0.16; Delta-E94-Maximum: 0.62).
The detailed test results can be downloaded as a PDF file. (eizo-ev2740x-validation.pdf)

Comparison with sRGB (color transformed)

Comparison with sRGB (color transformed)
Our CMM considers the working color space and screen profile and performs thenecessary color space transformations with colorimetric rendering intent on this basis.
The gray balance is very good (Delta-C-Average: 0.49), only the range is slightly
increased with 1.95 Delta C, which leads to a good score overall. The color values arevery good (Delta-E94-Average: 0.22).
The "Range" in Delta C (ΔC) refers to the range or span of color differences between twocolors or color values. Delta C is a metric used in color measurement and analysis toquantify the color difference between two color samples. It measures how much thecolors differ from each other.
The detailed test results can be downloaded as a PDF file.

Reaction behavior
We examined the response behavior in native resolution at 60 Hz on the DisplayPort. The
monitor was reset to the factory settings for the measurement.

Image build-up time and acceleration behavior
We determine the image build-up time for the black to white change and the best gray togray change. Additionally, we name the average value for our 15 measuring points.
The measurement value CtC (Color to Color) goes beyond the conventional
measurements of pure brightness jumps - after all, one usually sees a colored image on
the screen. This measurement therefore measures the longest period of time that themonitor needs to change from one mixed color to the other and stabilize its brightness.
The mixed colors cyan, magenta and yellow are used - each with 50% signal brightness.
In the CtC color change, therefore, not all three subpixels of a pixel switch in the sameway, but different rise and fall times are combined.
The data sheet states a response time of 5 ms for GtG. An acceleration option (overdrive)
is available. There are the positions "Off", "Standard" and "Improved". Standard" ispreset as the default value. The overdrive function can only be switched in the twomodes "User1" and "User2".

Overdrive, 60 Hz
60 Hz, Overdrive "OffAt 60 Hz and with the overdrive turned off, we measure the black-white change at 14.2
ms and the fastest gray change at 13 ms. The average value for our 15 measuring points
is 21.5 ms, and the CtC value is determined with 18.8 ms.
There are no overshoots to be observed, the tuning is very neutral. The switching time
diagram shows, among other things, how different brightness jumps add up, how fast themonitor reacts in the factory setting in the best case, and which average response time
can be assumed.

60 Hz (Overdrive "Off"): moderate switching times
60 Hz (Overdrive "Off"): no overshoots

60 Hz, Overdrive "Standard
In the factory setting "Standard", the switching times are already visibly shortened without producing annoying overshoots. The black/white change is reduced to 13.2 ms
and the fastest gray change to 8.6 ms. The average value for our 15 measuring points isalmost halved to 11.9 ms. The CtC value is now also good at 9.2 ms. The factory setting
is also the optimal choice for everyday use. Minimal overshoots can be detected, but they
do not lead to a deterioration of the image display.

60 Hz (overdrive "standard"): good switching times
60 Hz (overdrive "standard"): minimal overshoot

60 Hz, Overdrive "ImprovedIn the highest setting "Improved", the EIZO EV2740X can once again improve. Only theblack/white change increases to 17.2 ms. However, we cannot complain about the fastest
gray change with 7 ms. The same applies to the average value for our 15 measuring
points, which is 10.1 ms. The CtC value of 4.8 is now very good. In this overdrive setting,the overshoots are very noticeable and even blow up our graph. The panel simply
reaches its limits here.

60 Hz (Overdrive "Improved"): fast switching times
60 Hz (Overdrive "Improved"): acceptable overshoots

Network diagrams
In the following network diagrams you can see an overview of all measured values forthe different brightness jumps of our measurements. Ideally, the green and red lines
would be close to the center. Each axis represents a brightness jump of the monitor
defined in level and dynamics, measured via light sensor and oscilloscope.

60 Hz, Overdrive "Off"60 Hz, Overdrive "Standard

60 Hz, Overdrive "Improved

Latency
Latency plays an important role for gamers because it determines the total delay
between input and output. To determine the latency, we add the signal delay time to half
the average frame rate. With a refresh rate of 60 Hz and the overdrive mode "Standard",
we achieve the shortest total latency of 15.5 ms (consisting of 9.5 ms signal delay andhalf GtG time of 6 ms). In the "Enhanced" overdrive mode, the shortest total latency is
14.6 ms (consisting of 9.5 ms signal delay and half GtG time of 5.1 ms).

It should be taken into account that a display with a refresh rate of 60 Hz is technicallynot able to achieve a signal delay of 1 ms, as is possible with monitors with a refresh rateof 144 Hz or higher. Nevertheless, a latency of 14.6 ms for a 60 Hz screen is not a peakvalue either. However, this latency is perfectly acceptable for an office monitor.

Backlight
The EIZO EV2740X is equipped with a continuous backlight. In comparison, the diagramshows that the luminous flux is not interrupted at both full and reduced brightness, as
can be the case with PWM backlighting. This makes the screen ideal for prolonged workin front of it even at lower brightness, as the flickering of the backlight does not tire theeyes.

LED backlight with continuous brightness control

PbP
PbP stands for "Picture by Picture" and refers to a feature that allows multiple sources tobe displayed simultaneously on one monitor. When using PbP, the device divides theavailable screen space into separate sections and displays the content of different input
sources side by side at the same time.

PbP: Available layouts (Screenshot: EIZO manual)This can be especially useful when you connect multiple devices - such as a second
computer or a laptop - to the EIZO EV2740X and want to keep an eye on the content ofeach source simultaneously. Each section of the display then shows the content of a
specific source.

PbP in PbP-A/PbP-A layout
In the case of the EIZO EV2740X, there are the options (layout 1 to 3) PbP-A/PbP-A, PbPB/PbP-C and PbP-C/PbP-B. Thus, two sources can be viewed simultaneously. All four
signal inputs can be defined as main or sub input in the OSD. With a click of a button in
the OSD, it is possible to swap the displayed image sources from left to right. The same
applies to the assignment of the sound to the respective source. For each source, you
can decide whether the display is "automatic", "full screen", "aspect ratio" or "dot bydot". Not every constellation is possible. All working combinations are mentioned in the
manual.

In our example, the Chromecast's resolution (on the left) is 1920 x 1080 pixels (Full HD),
while on the right, Windows' recommended resolution is 1920 x 2160 pixels. The
Windows recommended scaling is 150%.

Docking station
The EIZO EV2740X is equipped with a LAN port and a USB hub for use as a docking
station. By connecting a USB-C cable, a network environment can be created, especiallyfor notebook PCs or tablets that are not equipped with LAN jacks. Furthermore,
peripherals that support USB can be used and smartphones can be charged. The USB-C
cable included in the scope of delivery should be used for this. Keyboard and mouse areconnected directly to the monitor in this case.
Even when the monitor is in power-saving mode, devices connected to the USB
downstream port can be operated. Therefore, the power consumption of the monitor
varies even in power-saving mode, depending on the connected devices. A device
connected to the display's USB downstream port will not operate if the monitor's main
power switch is turned off.

Loudspeaker
The EIZO EV2740 also has two built-in speakers with 2 watts of output power each.
Narrow slots of just under 5 cm are set into the bottom bezel at the sides in the corners.
The device processes sound signals on all signal inputs or via stereo mini jack. The
volume and the sound quality of the integrated speakers are acceptable, but of course
they can't compete with external speakers. How could they? There is simply a lack ofsound volume. We had set the volume to the maximum value of 30 and then adjusted
the volume via Windows. The speakers at least do much better than many devices
available on the market. We were positively surprised by the quality in any case. And
those who like to get a better sound can use the headphone jack.

DVD and video
The test device has two HDMI interfaces for HD players. The sound is routed to the
speakers or the headphone jack if it is occupied. We connected a Google Chromecast via
HDMI cable for the following tests. We selected the "Aspect Ratio" setting. The EIZO
EV2740X does not support HDR.

Scaling and frame rates
For the evaluation, we play picture signals in 480p, 576p, 720p, 1080p and 3840 x 2160.
16:9, 21:9 or 4:3 picture material was rendered exactly as expected, without distortions
and in each case with borders on the top and bottom or on the sides. Only 576p was
rendered distorted at the HDMI input. Playback with 30, 50 or 60 Hz delivered flawless
results. Playback with 24p is unfortunately not possible.
Three settings are available for the video level. A content-controlled, i.e. automatic
display can be selected, or alternatively between "Total" and "Limited". The color space
can also be adjusted manually. The options "Automatic", "YUV 4:2:2", "YUV 4:4:4","YUV" and "RGB" are available, whereby "YUV 4:2:2" and "YUV 4:4:4" can only be
selected under HDMI and only "YUV" under DisplayPort and USB-C.

Rating
Housing processing/mechanics:
Ergonomics:
Operation/OSD:
Energy consumption:
Noise generation:
Subjective image impression:
Viewing angle dependence:Contrast:
Illumination (black image):
Image homogeneity (brightness
distribution):
Image homogeneity (color purity):
Color space volume (sRGB)
Before calibration (Gray. Factory mode):
Before calibration (sRGB):
After calibration (sRGB):
After calibration (profile validation):Interpolated image:
Suitable for casual players:
Suitable for hardcore players:
Suitable for DVD/Video (PC):
Suitable for DVD/Video (external feed):
Price-performance ratio:
Price [incl. VAT in Euro]:

5
5
5
5
5
5
5
5
4
4
5
5
5
5
4
4
4
3
2
4
4
5

Conclusion
With the EV2740X, EIZO presents a 4K business monitor in perfection. More is not reallypossible. Besides design improvements, the USB-C connectivity in particular is brought
up to date. With a power supply of 94 watts, external devices can now be operated much
more efficiently. The already extensive ergonomic features are improved even more withthe latest FlexStand, including a new stylish stand.
EIZO's image quality is usually convincing, but what the EV2740X delivers can really only
be described as perfect, at least if you keep in mind that this is a business monitor. The
sRGB mode narrows down the color space accordingly, and the measurement results are
excellent. The image homogeneity is also convincing. A static contrast of more than
2000:1 for an IPS panel is exceptional. However, color reproduction and viewing angles
also deliver top rates.
The response times of the EIZO EV2740X are good for a business monitor, but are lesssuitable for playing fast gaming titles with the screen. The review sample was primarily
designed for the office - regardless of whether it is used as a standalone device or in
combination with multi-screen solutions. Especially the excellent features to save energy
are an important factor in this day and age. The energy consumption is low and achieves
a very good result.

The EIZO EV2740X retails for just under 1,000 Euros. Manufacturers usually offer awarranty of two to three years. EIZO offers a five-year warranty including on-site
replacement service. One year warranty can be calculated with about 100 Euros.
Furthermore, the company additionally grants a zero pixel defect warranty for six months
from the purchase date in case of not fully illuminated subpixels (partial picture elements
ISO 9241-307). There are many 4K office displays on the market that are significantly
cheaper. However, according to our research, no model comes close to those. We find theprice justified for the performance shown.
For this reason, we can give the EIZO EV2740X an unqualified buy recommendation. In
this quality, the manufacturer sets the bar enormously high and can be considered thereference in the field of 4K business monitors.

Note on our own behalf: PRAD received the EV2740X on loan from EIZO for testing
purposes. There was no influence on the test report from the manufacturer, nor was
there an obligation to publish or a non-disclosure agreement.
Link to original test report: https://www.prad.de/testberichte/test-eizo-ev2740xreferenz-bei-4k-business-monitoren/© 2023 PRAD ProAdviser GmbH & Co. KG