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::>Displays > 2014 > 12 > BenQ EW2440L

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10-12-2014


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BenQ EW2440L monitor: review and testing

In our country brand BenQ is not as well known and popular as other brands, but it includes quite a lot of devices. Therefore, having testing relatively affordable and popular monitors, we could not ignore the 24-inch solutions of the manufacturer. Especially if they are based on a matrix type VA, the benefits of which we have already had to evaluate in practice. Today our choice is the model BenQ EW2440L stands out among the other monitors by outstanding design.

BenQ EW2440L

The specs:

Model

BenQ EW2440L

Matrix type

VA

Paneltype

LED

Monitor size inch, mm

24 / 610

Visible screen area, mm

531 х 299

Screen format

16:9

Optimum resolution and frequency, Hz

1920 х 1080 @ 60

Pixel, mm

0,276 x 0,276

Brightness, cd/m²

250

Contrast Ratio (statistical/dynamic)

3000:1 / 20 000 000:1

Matrix Response Time (GtG), ms

4

Color numbers, M.

16,7

Horizontal scanning frequency, KHz

30 - 83

Vertical scanning frequency, Hz

50 - 76

Viewing angles (h/v) till the contrast > 10:1,°

178 / 178

Video output

1 x HDMI
1 x HDMI (MHL)
1 x D-Sub (VGA)

Audio output

2 х 3,5 mm

USB 2.0

No

USB 3.0

No

On-board speaker capacity, W

2 x 2

Power consumption level, W

23

Additional capabilities

Support of technologies Flicker Free (screen flicker absence), function Super Resolution (improvement of image sharpness on the screen) and mode Low Blue Light (reduction of blue component saturation); touch-sensitive control

Wall mounting

No

Dimensions (including stand), mm

546 х 422 х 191

Weight (including stand), kg

3,74

Producer website

BenQ

Product page

BenQ EW2440L

Packaging and content

BenQ EW2440L

BenQ EW2440L is shipped in cardboard box which provides protection against shock and possible mechanical damages. The image on the box allows to evaluate the appearance of the monitor, and the list of icons provides the description of main features. First of all, we would like to note that the screen size is 24” or 61 cm and a matrix-type VA with LED-backlit are applied. In addition, pay attention to the inscription “Flicker Free”. In case of long-term usage of the monitor it will reduce eye strain. Also the model BenQ EW2440L has other functions that will be described at the course of the review.

BenQ EW2440L

The package includes the following components:

  • leg and stand;
  • network adapter (AC: 100 - 240 V/50 - 60 Hz/1.0 A; DC: 19 V/2.1 A) and the cord;
  • cable with sockets D-Sub (VGA);
  • cable HDMI↔HDMI/MHL;
  • user's guide
  • CD with software and documentation;
  • reusable tie to secure the cable.

Design and operation conditions

BenQ EW2440L

The design of the BenQ EW2440L includes the blowing of modern era. Frameless slim body, plenty of gloss, the presence of plastic overlays brushed metal stylized, all this, of course makes this model quite beautiful and stylish. It is ideal for the modern office interior or apartment and even inactive state will attract attention.

We were pleased by the build quality of the case: all panels are excellent processed and fit tightly to each other. Despite the small thickness, it does not crackle in hands when you change the position of the screen and does not bend. The matrix coating is matte.

BenQ EW2440L

The manufacturer paid special attention to the design of the rear panel. Instead of angular box with electronics hanging behind the monitor, we see only a slight thickening in the central part, where video interfaces are grouped. However the producer had to reject the wall mount and an ergonomic stand. But nothing can be done: you have to sacrifice something in favor of a spectacular design. Note that the power supply is outside and is presented as a separate power adapter.

BenQ EW2440L

The leg has one swivel, allowing to change the angle of inclination in the range 5°...+20°. Metal frame of the stand as well as a large area of the base provides excellent stability of the monitor on the table.

BenQ EW2440L

Interfaces have an original vertical layout. Video connectors are presented by analog D-Sub port and two digital HDMI. In all cases there is a support for resolution 1920 x 1080 at a frequency of 60 Hz. Simultaneous output of images from two sources is not provided. And In some situations it is rather demanded option. But here is a support of standard MHL (only for the second connector HDMI). It allows you to connect compatible smartphones and tablets, using the monitor to display the stored content.

Multimedia functionality BenQ EW2440L is expanded to the headphone output and built-in speakers with total capacity of 4 W. Audio transmission can be realized via a video interface or HDMI connector on the PC sound card.

Built-in speakers have a good quality of sound: a little lacking the bass, but the overall picture is good. As a result, these speakers have enough opportunities not only for audio playback of videos in the internet, video calls or video conferencing, but also for listening to music in the workplace. However, more serious tasks require external speakers.

BenQ EW2440L

Controls are touch-sensitive and traditionally are located in the lower right corner of the screen. Any explanatory labels are not provided, which is a bit strange. When you call the menu at the bottom of the screen displays a small hint that simplifies the navigation. But the use of hot buttons will be very problematic, especially in the dark. And this despite the fact that the user has a unique opportunity to set up a list of options for quick access.

Display menu and operational demonstration of proprietary technologies

BenQ EW2440L

BenQ EW2440L

BenQ EW2440L model has quite simple and intuitive menu: on the left are tabs, and to the right their content.

The main parameters affecting the display of images on the screen are grouped in the "Image". Traditionally you can set the brightness, contrast and gamma, as well as set the balance of primary colors (R, G, B) using appropriate scales. Also here are additional items with the names of "Shade" and "Saturation", which will be useful in case of fine-tuning of the monitor.

BenQ EW2440L

Selection of preset modes and control of most technologies are carried out on the "Image settings". Like most modern monitors, tested model supports the function which increases the sharpness of the image ("Super Resolution"). In practice its operation can be analyzed as an example the following pictures.

BenQ EW2440L

Active function “Super resolution”

BenQ EW2440L

Inactive function “Super resolution”

Generally this technology copes with its job, but there are distinct artifacts at the boundaries of objects. Therefore, we recommend to use it only in case of reading text from scanned pages and photos or images with bad sharpness while zooming. In other cases, the function "Super Resolution" should be turned off, especially when it comes to games and other applications using a built-in method of smoothing.

Testing

During testing the model BenQ EW2440L the hardware platform was mini-computer ZOTAC ZBOX nano ID65 PLUS. Full description of the methodology of monitor research you can read the relevant material. 

BenQ EW2440L

BenQ EW2440L has recorded nine modes: “Standard”, “Custom”, “Cinema”, “Game”, “Photo”, “sRGB”, “Eco”, “M-book” and “Low Blue Light”. The last has several variations. First of all let’s look at the performance profiles obtained during the test, and then on the basis of the graphs in more detail to analyze the results. Also note that for testing we have the monitor revision «00-130-BA» released in December 2013. We do not exclude the possibility that the market may include other variants of this model. Therefore we cannot guarantee the comparability of results from different revisions of BenQ EW2440L.


«Standard»

«Custom

«Cinema»

«Game»

«Photo»

«sRGB»

«Eco»

«M-
book»

«Low Blue Light»

White area brightness, cd/m2

255,4

257,1

254,3

257,1

252,1

254,8

98,8

233,5

220,8

Black area brightness, cd/m2

0,869

0,887

0,093

0,352

0,117

0,874

0,345

0,171

0,720

Contrast coefficient, х:1

294

293

2713

731

2148

292

286

1367

307

Color temperature of white dot, К

7767

7736

7400

7980

8093

7618

8032

8006

6095

Correspondence of color space with sRGB standard, %

84,7

84,6

86,7

77,1

87,7

84,8

85,9

89,3

85,9

Correspondence of color space with AdobeRGB standard, %

61,9

61,8

63,0

53,3

62,7

62,0

62,6

62,4

61,2

Average deviation dE*94 (E)

0,85

0,81

1,93

7,03

1,96

0,82

2,11

3,35

0,79

Maximum deviation dE*94 (E)

4,16

4,34

6,66

28,22

5,17

4,17

7,39

11,89

4,37

Average gamma

1,61

1,61

1,94

1,55

2,06

1,61

1,42

2,37

1,73

Power consumption, W

28

28

28

28

28

28

20

26

25

After opening the on-screen menu, the first thing we amazed was the number of preset modes. However as usually many does not mean good. Analyzing the results obtained during the test we concluded that the profiles "Standard", "Custom" and «sRGB» have almost identical characteristics.

The maximum brightness level was 257.1cd/m2, which is consistent with the declared value of 250 cd/m2. Fans of bright images will be satisfied. For conventional lighting we recommend to reduce this option to the level of 150 - 200 cd/m2, or use the profile «Eco». If you spend a lot of time for the computer, it is advisable to set a smaller value. Specially customized profile "Low Blue Light" with the possibility of reducing the intensity of the blue component is not very suitable for this purpose. At least the screen brightness equal to 220.8 cd/m2, certainly will not help to reduce eye strain.

The main difference of BenQ EW2440L from competitive models is the application of a matrix VA instead of the traditional or IPS PLS. Unfortunately, the manufacturer did not specify its subspecies. Based on the data from different sources it's either AMVA, or AMVA+. In any case, both types are quite modern developments, therefore must ensure the correct and deep black color with all its attendant benefits. One of them is expressed in a large static contrast ratio which in this case reaches 2713:1. It is little lack to the claimed value of 3000:1, but at the same time it is several times higher than for IPS and PLS slutions.

However, do not rejoice prematurely. The fact that such a high rate was observed only in a single case (the profile "Cinema"). After activating the profiles “Photo”, “M-book” and “Game” we have much smaller values 2148:1, 1367:1 and 731:1, respectively. Although this will be enough to ensure the on-screen image with rich colors. But in other cases, where the coefficient of static contrast ratio ranges within 286:1 - 307:1, you’ll get duller version of the original image.

This model has a slightly higher level of energy consumption (about 25 - 28 W) than competitive 24-inch solutions. However, the extra few watts are unlikely to greatly affect the electricity bill.

Now let's see how things are going with the color rendering.

BenQ EW2440L

CIE-diagram of profile “Game”

BenQ EW2440L

CIE-diagram of other profiles

If you do not take into account the profile “Game”, CIE-diagrams of other modes are very similar. A slight shift is observed in all control points, which leads to a lack in turquoise, green, blue, pink and red hues, as well as a oversaturation in light green and yellow-orange areas. In numerical terms this has the following values 84.6% - 89.3% of color gamut in sRGB space. Such indicator is quite enough for standard applications, movies and games. However, if you are working in professional programs for processing graphics or video, it is best to look for a monitor with a wider color gamut (95% and above).

CIE-diagram of profile "Game" clearly demonstrates the distortion with the standard sRGB-triangle. After activating this mode, you will get the lowest gamut about 77.1%.

BenQ EW2440L

Diagram of main color and hue deviations from references in profiles “Standard”, “Custom”, «sRGB» and «Low Blue Light»BenQ EW2440L

Diagram of main color and hue deviations from references in profile “Cinema”

BenQ EW2440L

Diagram of main color and hue deviations from references in profile “Photo”

BenQ EW2440L

Diagram of main color and hue deviations from references in profile “Eco”

BenQ EW2440L

Diagram of main color and hue deviations from references in profile “M-book”

BenQ EW2440L

Diagram of main color and hue deviations from references in profile “Game”

When measuring color accuracy in modes "Standard", "Custom”, «SRGB» and «Low Blue Light" pretty good results were recorded. In all the above profiles, the average deviation of dE*94 (ΔE) is 0.79 - 0.85, which is significantly less than the permissible level of 1.5. If analyze the obtained chart, we can see that there are only minimal problems when displaying shades of black (100% and 90% saturation). Although in general such inaccuracies can identify only the equipment. Also, in case of need you can use the modes "Photo" and "Cinema". Their mean values are little worse and they have more problematic shades, but, in general, the picture is more or less acceptable. If we talk about the rest of the profiles, here everything is really bad. Look at the mode "Game". Agree that the red color instead of pink, blue instead of purple and so on does not provide proper work with the monitor.

BenQ EW2440L

Graph of RGB  level of profiles “Standard”, “Custom”, “Game”, “sRGB”

BenQ EW2440L

Graph of RGB  level of profile “M-book”

BenQ EW2440L

Graph of RGB  level of profile “Cinema”

BenQ EW2440L

Graph of RGB  level of profile “Eco”

BenQ EW2440L

Graph of RGB  level of profile “Photo”

BenQ EW2440L

Graph of RGB  level of profile “Low Blue Light”

Balance of RGB levels can be considered as good only for profiles "Standard", "Custom" "Game" and «sRGB», where on the charts all three components fall within the range of ±10% relative to the reference line (100%). The other modes have not as rosy picture. For example, the activation of profiles «Eco» and "Photo" will lead to shift in cool shades and "Low Blue Light" on the contrary in the warm. Although for the mode designed for reading this solution is justified.

BenQ EW2440L

Using the screen menu you can "mute" the blue component by selecting one of four options: "30%", "50%", "60%" or "70%". This will change the background color: from white, which is typically used for text documents to the yellowish color. However, don’t forget to reduce the brightness of the monitor at least to the level of 50 - 80 cd/m2.

BenQ EW2440L

Graph of gamma-curves in profiles “Standard”, “Custom”, “sRGB”, “Game” and “Low Blue Light”  

BenQ EW2440L

Graph of gamma-curves in profile “Cinema”

BenQ EW2440L

Graph of gamma-curves in profile “Photo”

BenQ EW2440L

Graph of gamma-curves in profile “M-book”

BenQ EW2440L

Graph of gamma-curves in profile “Eco”

Any of the profiles cannot boast of a good tuning range. In all cases its average value is either overestimated (mode «M-book»), or underestimated (other modes). And the behavior of gamma curves is also far from the ideal. Mainly in the graphs we can observe a shift of all three components relative to the reference black line. Thus, the picture on the screen will look duller than the original. Especially this effect will be noticeable after activation of profile «Eco».


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