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Eizo ColorEdge CS2420 monitor review


Review of the Eizo ColorEdge CS2420 monitor

Published on May 15, 2015   |   Updated on November 10, 2020


Yes it is possible to buy a 24-inch Eizo display, ColorEdge (synonymous with quality at Eizo) for less than $900 ! In addition, the price of the replacement for the magnificent CS240 has dropped very slightly. But how much does this new Eizo CS2420 improve it ? And what is it worth in relation to the absolute weapon - Eizo CG2420 - that this same manufacturer sells but at more than $1,400?

To quickly introduce this new Eizo display, the first in the ColorEdge series to replace the excellent Eizo CS240, we can say that it is a 24-inch display (1920 x 1200 - pitch 0.27 - 94 ppi) with a new generation matte panel that is intended for photographers and other graphic designers but also for video artists, IPS (white LED diode technology), 16 bit LUT table and large gamut therefore covering a gamut very similar to the Adobe RGB / DCI-P3. It therefore falls into the category of so-called "Graphic Arts" screens. It is still sold under the symbolic bar of 900 dollars (early 2019) like the old Eizo CS240.

  In a few words...

Eizo CS2420


So close to perfection at less than $900 but it is necessary to to leave 10 / 10 to the CG2420, his big brother! - Read my conclusion  

  More offers...  
CDN$ 1,559.51



Introduction to the Eizo CS2420

Here are some illustrations of this new display with its flawless ergonomics, really improved (handle, thin edges, electrostatic buttons) compared to the old Eizo CS240... and as on the magnificent Eizo CG2420.

Eizo CS2420 monitor   Back of the screen Eizo CS2420
Side view of the Eizo CS2420 and its USB 3.0 plugs   Connectors of the Eizo CS2420
  Technical specifications
  Eizo CS2420 Average price : $860.00 Inc. VAT
Size / Resolution
24-inch 16:10 - 1920 x 1200 - 94 ppi
Panel technology
IPS white LED (New matte panel)
  Color gamut > 99% Adobe RGB
350 Cd/M2 / 820:1 measured
LUT table
10 bits / 21 bits - Hardware calibration
  Response time 15 ms
554 x 396 x 245 mm
  Border widths 18 mm (27 mm on the old CS240)
  Color calibration soft Yes - ColorNavigator
  Connectivity DVI-D + DP 1.2 + HDMI + Hub USB 3.0
  VESA compatibility Yes - 100 mm
  Hood No - As an option
  Warranty 5 years - Eizo USA

What's in the box...

The monitor is sold with :

  • The power cord... long enough!
  • The DVI cable in 2016 is visibly replaced by a DisplayPort cable in 2018.
  • A USB 3.0 cable for hardware calibration and powering the USB HUB.
  • ColorNavigator in CD

Note! This Eizo CS2420, like the Eizo CS240 it replaces, does not have an built-in colorimeter so you will need to use your sensor or buy one. My buying advice : i1Display Pro or Spyder5Elite!

The size and perceived quality

The screen has a 24-inch panel and is 554 mm wide (the panel is 518 mm wide). The screen is therefore significantly less bulky than the CS240 it replaces. So this is good news for those who want to build a multi-screen working environment!

Eizo CS2420 and its optional hood

The monitor and its Adobe RGB panel - New

1 - Definition/resolution - It is therefore a new satin-finish IPS panel, normal in this niche of so-called "Graphic Arts" screens, measuring 1920 x 1200 pixels. Its resolution is therefore 93.8 ppi. Classic and not "Retina", this display and its extremely discreet "granularity" are very similar to the CS240, the backlighting is of the white LED diode type as on the old CS240.

2 - The panel and its anti-reflective coating - New - The anti-reflective coating of the CS240 light marked an important step because it was finally discreet and hardly "marked" the pixels anymore. You can't say I felt sorry for mine (on a CS240) and this new panel seems really very close to the CS240 without reaching the "velvety" of the CG2420.

3 - Hardware calibration software - This monitor is sold with its calibration software : the well-known ColorNavigator - It is supposed to guarantee you an ideal and above all easy calibration, for those who do not master the meaning of all target values - but without integrated calibration sensor. It will therefore be necessary to have a compatible sensor to use it. Nothing but good, then.

That said, the monitors have made so much progress that even with a "simple" calibration with the i1Display Pro + i1Profiler, we now obtain a result that will appear perfect for our eyes. Only the numbers can be improved with this type of hardware calibration but below our perception threshold.... Unless you want to calibrate it in hardware for use calibrated on another computer or in another environment because the ICC profile is directly integrated in the LUT table of the latter and not in the computer that was used to calibrate it.

Note about hardware calibration ! However, I understand that the brands communicate on their hardware calibration software because you really are "sure" to optimize all the parameters of your calibration, especially the display of grayscales, but I also see that these software programs that really added value a few years ago are less decisive (if not different) today, on very high-end screens as is the case here. You aim for the absolute, use them. Even if your eyes don't see the difference, your conscience will be at peace!

Screen edge thickness - New

Bords de l'Eizo CS2420 They now measure 18 mm on each side and have lost 10 mm on the right and left and nearly 3 cm at the bottom. This is not a record for finesse but we are getting closer to the 2018 standards favouring multi-screens. (To be read : my advice to choose your photo monitor )

The connectivity

A classic 2018: DVI-D, HDMI, DisplayPort and a USB 3.0 socket (which can be used for hardware calibration and one to power the USB 3.0 HUB with 3 USB 3.0 plugs on the left side of the screen - see photos above).

Connectors of the Eizo CS2420

Improved ergonomics!

Ergonomics has been significantly improved, especially for transport, since a new handle appears at the top and back of the screen, which is very practical for raising or lowering it to the right height. However, there are still no cable bushings in the foot. The amplitude of the screen's movements in height (over 155 mm), inclination and rotation will allow all users to find their ideal setting. Really perfect!

  Ergonomics of the Eizo CS2420
  Another new feature is that the menu buttons on the screen are now electrostatic, much more elegant than on the CS240 and have a nice ring (which can be cut) when you click on it. A lot of refinement in this new monitor...
  Electrostatic keys on the OSD menu of the Eizo CS2420

The buttons on the monitor menu are now electrostatic but the OSD is still the same.

Note!  In the OSD of the monitor, it is possible to modify the brightness of the LEDs or even turn them off for those working in the dark using the Preferences > Indicator menu. Good point!


What is the Eizo CS2420 monitor worth after calibration with the i1Display Pro?

To start with, I calibrated this monitor - like all the monitors I test - with the best current sensor (except the superlative and very expensive Discus) in an excellent price/quality ratio: the i1Display Pro + i1Profiler 1.6.6 software in order to locate this new monitor in relation to the market's monitors. These figures have been largely confirmed or even improved on another copy.

I chose the following screen settings :

  • Color space: Adobe RGB
  • Gamma: Adobe RGB (2,2)
  • Gamma 2,2 (Adobe RGB)
  • Color temperature: 6500K (Adobe RGB).

And as target values in the i1Profiler 1.6.6 software...  

  • Display technology : Choose white diodes,
  • D65 or possibly a little less if you want a slightly warmer screen. (Note that at D55, the screen turns yellow rather than warm, unlike high-end displays).
  • Luminance : 80 Cd/m2 or more depending on your main use (printing or web) and especially the brightness of your room,
  • Contrast : Native or 287:1 for those who print a lot,
  • Gamma : 2,2 – standard curve, (The L* is only available with ColorNavigator and there is a lot to say about this L* gamma anyway)
  • ICC standard: V2 (to avoid incompatibility problems with some image viewing software (images too dark) and obviously V4 if you know what you are doing.

And the result is?

Objective data: what does the final report say after calibration?

Before switching to Delta E, it is interesting to record the color temperature values achieved and the contrast.

  Final report after calibration of the Eizo CS2420 with the i1Display Pro

My advice! As by chance the color temperature (CT) is obviously at 6500K and not approaching as on many lower end displays. The contrast is very close to the CS240 (even higher on another copy at 830:1) while the panel has changed. This panel is therefore different from the CG2420 which replaces the CX241.

The Delta E figures according to the 2000 standard are obviously excellent without approaching the new record of the CG2420 on my test copy at the end of 2016 BUT as good as the CG2420 on another copy tested at the end of 2017 and finally very close to the old CS240 after a calibration with the i1Display Pro sensor therefore without going through a hardware calibration and ColorNavigator.

  Delta E after calibration of the Eizo CS2420 with the i1Display Pro

My 2016 opinion updated at the end of 2017! If my test copy from the end of 2016 did not beat a record with only 0.52 of average, my second test copy from the end of 2017 is at the level of the CG2420, i.e. perfect! The CS2420 sets a better average than the CS240 because the highest patch does not exceed 0.79. This new CS2420 is therefore in line with what can be expected from an Eizo ColorEdge display with perfect displayed colors!

Now let's see harmonization tests in luminance and Color Temperature (CT or White point):

luminance uniformity after calibration of the Eizo CS2420 with the i1Display Pro

Once again, these are superlative reports! You want to see what a homogeneous panel is ? Get a loan or buy this CS2420!

uniformity in color temperature after calibration of the Eizo CS2420 with the i1Display Pro

In terms of colour temperature, it was surprisingly less impressive on my test copy at the end of 2016: 134 K maxi difference at the top is still not negligible ! but everything has become perfect again on the copy tested at the end of 2017.

And my subjective data: what does my eye see?

The CS240/CX241/CG247, which shared the same panel, were references in terms of quality of display of colors, grays, shades, subtleties in saturated colors, in the display of shadows, in the uniformity, in everything you want! The panel of this new CS2420, although different from the magnificent CG2420 and which still has a double contrast (1500:1 instead of 830:1), is equal to it and it is difficult to separate them visually. If you own an Eizo CS240, you could be tempted by the many ergonomic and connectivity improvements and be sure to have what I would call a perfect display.




  Eizo ColorEdge CS2420  
Color fidelity 10
Uniformity of the panel 10
Resolution 8.0
Ergonomic design 10
Connectivity 8.5
Manufacturing quality 10
Value for money 8.5


  I like it very much...  
  • Delta E figures after calibration at the same level as the CG2420, so "perfect" in practice,
  • New "satin" matt IPS panel with a superb rendering, even if it does not improve the CS240's performance,
  • Wide gamut for photographers (Adobe RGB),
  • Slimmer edges, on all sides: 18mm, finally!
  • Updated connectivity (USB 3.0),
  • Much improved ergonomics (very practical handle, electrostatic buttons)!
  • 5 years warranty
  • A must have product!
  • Price unchanged!
  • Unbeatable value for money!
  I regret...  
  • Does not improve the color quality of the CS240 (which was already perfect!) while the CG2420 significantly improves the CX241 (Double the contrast),
  • No hood included.
  My overall rating...  
  9,25 / 10  
  My conclusion...  
  Why "only" 9.25/10? Just to leave 10/10 to the CG2420 which offers a double contrast. For the rest, this CS2420 is only perfect at only $859! Yes, I assume, at only $859.00.
Nevertheless, if you are adept at a certain form of perfection and if you also want a long-lasting monitor, you will surely have a real crush on this more affordable monitor than the Eizo CG2420, which has a built-in colorimeter and a doubled contrast.
Eizo ColorEdge CS2420
CDN$ 1,559.51
Here is my Full review of the EIZO CS2420 monitor
- Here is my complete review of the Eizo CS2420
  1 - Introduction to the Eizo CS2420 monitor
2 - What is the Eizo CS2420 worth after calibration?
3 - My rating and conclusion

- My 35 full monitor reviews!
- How to choose your monitor?
- How to calibrate your monitor?


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