You do not like gaming IPS-type and about TN Film you do not want to remember at all? No problems! Samsung C34F791WQI is a new curved monitor with 34- inches, 100 Hz, backlighting on quantum dots, an improved VA-panel with a resolution of 3440 × 1440 and all at a tasty price.
The beginning of the market for gaming monitors can be called the middle of 2009, when Samsung introduced the world’s first 120-Hz display with support for 3D. A year later, other manufacturers released their alternatives, and all of them were also equipped with TN + Film matrices. After a short period of time, Samsung withdrew from the battle, in all probability, not seeing a great demand for products of this kind and interest to it from the public.
However, it is the segment of gaming products that has become a new development branch for many manufacturers in the past few years, and it is simply impossible to miss the chance to snatch your “piece of cake”. The interest of buyers to such devices is growing every year. In the market of monitors this segment is now divided among themselves Acer, ASUS and BenQ. In 2017 Samsung decided to thoroughly push competitors in this sector with its new game series. And today we will get acquainted with the most, perhaps, its brightest representative – the curved 34-inch model Samsung C34F791WQI.
The monitor uses the latest and unique curved SVA-matrix with a frequency of vertical scanning 100 Hz manufactured by Samsung – model LTM340YP (probably version 04). This is a full-fledged 8-bit (without the use of the FRC method) solution with Quantum Dots backlighting, without using Flicker-Free and with the claimed color coverage at 125% of the sRGB space. The monitor is able to reproduce up to 16.7 million color shades.
The resolution of the 34-inch, 34-inch screen is 3440 × 1440 pixels (the so-called UWQHD standard – ideal for working with a large data stream and viewing the “right movie”), a 21: 9 aspect ratio, a pixel density of just 110 ppi, a level of 27-inch WQHD solutions.
The claimed maximum brightness of the monitor is 300 cd / m 2 , the static contrast ratio is three times higher than that of similar IPS-type solutions – 3000: 1, the viewing angles are maintained at 178 degrees in both planes. The response time measured by the GtG method is 4 ms.
Courland (Radius of arc in millimeters) of the panel is 1500R – the maximum that can be obtained by purchasing a modern ultra-wide monitor. In comparison with the already old solutions with 3800-4000R indicators, the Samsung model not only looks more interesting, but also puts the comfort of working behind the huge, 34-inch screen to a new level!
The native frequency of vertical scanning for the matrix used is 100 Hz, which is a novelty for * VA technology with such a high resolution. The applied adaptive synchronization technology AMD Free-Sync operates in the range of 48-100 Hz and will allow you to enjoy the smoothness of the picture (without “breaks”) even at a very floating frame rate (fps), but exclusively to the owners of video cards with the GPU of the corresponding company. The operating mode of the ULMB backlight (or its analog) is not provided.
The novelty differs from the modern “frameless” design with thin outer frames and medium inside (6.5 mm on top, left and right and 2.8 mm from the bottom). The design of the case itself and the stand are familiar to us from the previously tested Samsung C27F591FDI monitor . A distinctive element was only the new central column, which allowed to improve the possibilities of ergonomics of the model. And with the supplied metal adapter, you can use a monitor with third-party VESA-compatible brackets.
Among the main interfaces for connecting the hero of the review can offer one Display Port 1.2a and two modern HDMI 2.0, each of which is capable of 100% reveal the potential in the display. To output multiple signal sources to one screen, the PiP | PbP functions are used. Also, the manufacturer installed a built-in speaker system with two speakers of unknown power. And for working with the periphery, there are two USB 3.0 ports and a 3.5 mm audio output.
Moreover – while this is the only 34-inch UWQHD-monitor on a different from the IPS-type-matrix with such a high frequency of vertical scanning. Based on the announcements of other manufacturers, we conclude that in the near future a new SVA-matrix from Samsung with backlighting on quantum dots and a 1500R curvature will be used exclusively in the company’s products. A sort of “checkmate” from the Koreans, especially if we take into account the results shown by the novelty. But about them – a little later …
Samsung C34F791WQI monitor comes in a large cardboard box. Colorful design is presented only on one of its sides. Carrying handle is not provided.
About all the main differences of the model narrate the inscriptions-pictograms next to the information stickers.
One of them reports that the display is made at the Samsung factory in China. The claimed color of the case is black, although in fact it is gray-white.
The monitor includes the following:
All cables are made in white color – for the design of the monitor itself. To the delivery kit does not find fault – there is everything that can only be needed, and of very high quality.
The factory calibration report promises perfect color reproduction right out of the box when using an HDMI connection. We can say at once – it is close to the truth even in the case of DisplayPort.
The design of Samsung’s novelties went to her from more affordable solutions of the company, one of which we met earlier. The case of the monitor is made of glossy white and matte silver plastic. Modern outlines, coupled with a large curved ultra-wide screen make the model very spectacular looking and expensive looking.
The radius of the round stand in gray matte plastic is 24 cm – quite a bit against the background of the size of the case with a 34-inch matrix. The fixing of the central pillar extends beyond it.
The stand, in turn, is made of white plastic with a glossy surface. Initially, it is attached to the body on a special movable hinge, closed with a plastic curtain.
First, it is not entirely clear how, with this configuration, you can attach a metal adapter plate to the VESA brackets in the package, but the instructions give answers to all the questions – it’s possible and not so difficult.
The cable laying system is made in a new manner and is distinguished by its high degree of thought and efficiency. In the central rack, in its middle and lower parts, there is one special cut-out, and when one of the plastic linings is dismantled, access to the inner channel of the gasket opens. In addition, there is a cover for the area of the interface connectors, which conceals them and the cables themselves from unauthorized eyes.
The radius of curvature of the 1500R strongly distinguishes Samsung from other representatives of 34-inch monitors. This kurvatur not only reduces the requirements for free space on the desktop, but also allows you to more comfortably and completely perceive information from the screen, even with a small distance from the monitor.
The matrix used in the monitor has a semi-matte surface, which is increasingly preferred by many manufacturers in order to reduce the visibility of the crystalline effect.
The ergonomics of the stand allows you to adjust the position of the case in a wide range. Because of the curved rear surface, the manufacturer declares a different tilt range for the lower and upper positions: -4 to +34 degrees and -14 to +22 degrees, respectively, height adjustment up to 100 mm. In case of lack of such possibilities, the user can use a VESA-bracket more suitable for his needs, which, of course, is purchased separately.
The base of the stand is made of plastic, although the inside of the stand is made of metal. To grip the work surface, six small rubber feet are used. They hold the monitor well. We can note the high rigidity of the structure and its good stability.
The sticker on the monitor’s body becomes known that it was manufactured in December 2016, the version is FB02.
The main connectors for the connection are concentrated behind the plastic cover and point downwards. Slightly higher are the USB 3.0 connectors for connecting peripherals. Nearby is the Kensington Castle.
The built-in speaker system is represented by two speakers of unknown power located on the lower edge, on either side of the central column. We were struck by the maximum loudness of these columns and the complete absence of wheezing. Low frequencies, as usual, are almost absent, but in general for use in the office, Skype conversations, listening to background music (without special requirements) and playing background sounds of such an acoustic system will be more than enough.
The combination of white and silver plastic allows Samsung C34F791WQI to retain its original appearance for a long time. On the back of the glossy surface, fingerprints are almost invisible, and on the matte elements they are not visible at all.
The body is stiff – it practically does not crackle and does not creak when squeezing or twisting. The build quality is high. The gaps are uniform throughout the entire length, do not find fault with the painting. Processing of elements does not cause censures. The monitor is made at the level of more expensive solutions in its class and precisely in no way inferior to them. Is that design, but here – “the taste and color of all the markers are different.”
Control system in the novelty of Samsung we are familiar with other models of the brand – this is the same five-way joystick, located at the rear of the device.
The blue power LED is at the bottom of the front frame, but with the default settings, it is activated only if the monitor is in the standby mode.
Moving the joystick up or down brings up the menu for quick adjustment of brightness, contrast and sharpness of the image, and the left / right movement displays the volume settings.
Pressing on the center calls up an additional menu block with five screen buttons. With their help, you can call up the main menu, select a signal source, turn on the PiP | PbP function, turn off the display or return to the previous dialog.
Thanks to the five-way joystick, controlling the monitor is simple and convenient. This is one of the most successful ways to work with the OSD-menu, and Samsung has been using it for a long time.
The design of the menu is the timeless classic from Samsung: it will be familiar to many owners of different monitors of the company. In the case of the novelty, it contains five sections.
The first and main is Picture. It focuses the settings responsible for image quality. Adjustments are subject to such parameters as brightness, contrast, sharpness, MagicBright, MagicUpscale modes, black level with HDMI connection, color temperature, RGB gain and gamma. In the novelty, the manufacturer added the Basic Color mode (basic colors), with which the color coverage is reduced to the standard sRGB.
Additionally, you can change the size of the picture, enable game mode, Eye Saver mode (decrease brightness and color temperature) and change the degree of matrix acceleration.
The new section is “PIP | PbP” with settings for outputting multiple image sources to a single working screen. You can choose not only the position and size of the windows, but also the sound source, as well as the contrast.
The third section focuses the settings of the OSD screen itself. It is suggested to choose the localization language (Russian is present), the position, the degree of transparency and the delay of automatic shutdown.
The System section contains parameters that affect the behavior of the display in a particular situation. In it, you can reset all settings to default values, activate FreeSync technology (but it will work only with a GPU from AMD) and enable technology to reduce power consumption. In the separate Sound tab, you can adjust the volume of the built-in speaker, select one of the equalizer modes (four possible options) and output the sound (stereo, right / left channels). The choice of HDMI and DP versions is available.
You can see the basic working information on the display in the last section with the corresponding name – Information. Access to the service menu was not found.
The Samsung C34F791WQI monitor was tested using an updated X-Rite i1 Display Pro colorimeter in combination with the X-Rite i1 Pro reference spectrophotometer, the Argyll CMS software package with the dispcalGUI graphical interface and the HCFR Colormeter program. All operations were performed in Windows 8.1, during testing the refresh rate was 100 Hz.
In accordance with the methodology, we will measure the following monitor parameters:
The uniformity of the illumination, the uniformity of the color temperature (kelvins and deviation units of DeltaE) with a brightness at the central point of 100 cd / m 2 .
All the measurements described above were carried out before and after calibration. During the tests, we study the main monitor profiles: default, sRGB (if available) and Adobe RGB (if available). Calibration is carried out in the default profile, except for special cases, which will be discussed additionally. For monitors with extended color coverage, we select the sRGB hardware emulation mode, if available. Before the beginning of all tests the monitor warms up within 3-4 hours, and all its settings are reset to the factory settings.
Also we will continue our old practice of publishing calibration profiles for the monitors we tested at the end of the article. At the same time, the 3DNews test lab warns that such a profile will not be 100% correct for the disadvantages of your monitor. The matter is that all monitors (even within the limits of one model) will necessarily differ from each other by small errors of a color rendition. Making two identical matrices is impossible physically, so for any serious calibration of the monitor you need a colorimeter or a spectrophotometer. But the “universal” profile, created for a specific instance, in general can correct the situation for other devices of the same model, especially in the case of cheap displays with pronounced color defects.
In the Samsung C34F791WQI monitor, the manufacturer uses six pre-installed MagicBright modes and two additional modes: Eye Saver and Game. When testing the monitor, we used the Display Port 1.2a interface.
By default, the settings for the main parameters are as follows:
The value of the “Contrast” parameter did not change due to the lack of positive influence on the gamma curves, the “Gamma” mode was left in the default value, since the other two only worsened the final gamma curves. The main changes occurred after the brightness of the backlight was reduced and the RGB values were corrected in the color temperature settings. In addition, we reduced the sharpness to 0 because of incomprehensible color contours on the black text at factory settings. And in general the pictures on the screen after this manipulation became much more comfortable for the eyes.
The initial check was carried out with the standard display settings in the “Custom” mode.
The maximum brightness was 314 cd / m 2 , and the lower value was close to 71 cd / m 2 . The contrast ratio is 2610: 1. On average, this is a good level for the modern * VA-matrix, but lower than stated by the manufacturer.
In general, the result is high. The working range of brightness is satisfied by the vast majority of users, and the contrast margin will allow to lower the minimum brightness limit to the desired level while maintaining a high level of black level (especially in comparison with TN + Film and IPS-type-monitors).
In the monitor monitor Samsung uses a new SVA-matrix with extended color coverage due to backlighting on quantum dots. But it is not expanded for professional color work, but for the colors to look more saturated, let it go against the idea of correct color rendering.
By the way, exactly the same illumination, apparently, is used in more affordable Samsung solutions ( C27A591FDI example ), but there it for some reason is not declared as a feature, although the results for the color coverage are almost the same as those of the hero of today’s Review.
To get rid of shades that go beyond the triangle, as always, we recommend using ICM / ICC profiles and software with color management system (CMS) support.
With factory settings, the monitor’s color coverage is 99.8% sRGB- and 80.2% AdobeRGB-standards. The area of the figure – 124.8% of the sRGB-standard – is closest to the claimed 125% in the monitor’s characteristics. For * VA-matrix – an excellent result. The color triangle is superior to both standards in the area with red shades, which can lead to excessively intense body shades. So it’s better not to forget about the profile and CMS or at least always remember about this feature of the monitor.
The white point is set close to the reference at 6500 K, and the stability of the shades of gray is at an average level.
The graphs of gamma curves show how the manufacturer tried to increase the discernibility of the extreme dark shades at the factory settings due to the Black Crush effect, which is common to all * VA-matrices, but other areas were affected, albeit not significantly. However, all this did not greatly affect the overall accuracy of color reproduction – many buyers will just reduce the brightness to a more comfortable level, and you can immediately enjoy the picture on the screen.
According to the Argyll test, the average color deviation of the Samsung C34F791WQI monitor is 2.75 units DeltaE94, the maximum is 8.64. The result is below average, but the reason is known here – non-standard color coverage. To correct the situation it is possible to create an alternative profile, but we will go in our standard way and will do a full calibration.
The lack of the possibility of hardware calibration with recording changes to the built-in LUT monitor led us to calibration in the usual and more conventional way.
The produced procedures slightly reduced the color coverage of the novelty and slightly displaced all three control points. According to Argyll CMS, compliance with the sRGB and AdobeRGB standards fell to 99.2% and 76.4%, respectively. It will be difficult to notice the difference by eye.
Manual tuning and calibration made it possible to achieve a white point at 6496 K with a DeltaE of 0.3 units and noticeably increase the stability of the CG of grayscale.
The gamma-curve of gray and the curves of the three color channels almost perfectly fell on the reference line.
Color deviation, expressed in units of DeltaE94, decreased to a level of 0.48 on average and 1.68 at maximum. This is a high result, but when working with color, do not forget about the features of * VA-displays and use profiles and software with CMS support. For all other problems, these features practically do not play a role.
Because of the non-standard color gamut in Samsung decided to add a special mode that emulates the “base colors”. Most likely, they mean the color standard sRGB. Let’s see how well the engineers of the company managed to cope with the task.
As it turned out, in this mode the triangle of coverage does not go beyond the standard sRGB and is inferior to it on red, pink, purple, green and turquoise hues. As a result, the correspondence does not exceed 89.9% of sRGB and 62.8% of AdobeRGB. For a monitor of this class and price segment – the result is average. I would like more accurate emulation of sRGB.
When Basic Color is turned on, the white point shifts to the cold area, but without the predominance of the parasitic hue. Stability of the CG of shades of gray is at the level of factory settings.
In this mode, the visibility of dark shades is enhanced, and the light shades, on the contrary, are darker than the required level. Thus, the final contrast of the picture is reduced, the accuracy of the color rendering is obviously lower than in the Custom Mode.
Reduced color coverage did not significantly improve the color rendering performance. The average deviation of DeltaE94 was 2.39, and the maximum deviation was 7.5 units. As a result – the mode will suit those users who do not want to face oversaturated colors and do not plan to adjust and calibrate their new acquisition in the near future.
The Samsung C34F791WQI monitor does without any system for compensating for uneven illumination. The uniformity of the display backlighting was checked after the brightness in the center point of the monitor decreased to a level of 100 cd / m 2 and the color temperature of ~ 6500 kelvin.
The first picture shows a photo of a white field at a certain exposure during shooting and further program processing for a more visual representation of the uniformity of the backlight.
The average deviation from the central point was 10.3%, the maximum deviation was 32%. The result for such a diagonal is below average, especially the right upper corner looks especially problematic. However, in real work for ultra-wide screen for such shortcomings pay attention very rarely, because only the extreme 2-3 cm on the left and right are most darkly darkened, and the view is almost constantly “chained” to completely different zones.
In addition, it helps to forget about problems with backlighting on a light field and a small spread of color temperature values across the screen field, not exceeding 600 kelvin. And if you forget about the problem right bottom corner, then the operating range and even decreases by half. The average deviation from the central point is 1.7%, the maximum deviation is 5.5%. For such a diagonal – very, very good.
The surface diagram with the deviations of the color temperature expressed in DeltaE units this time was similar to the previous one, but the conclusions from it follow very different: certain problems with the white point of the Samsung monitor can be seen on the left side of the screen. The maximum value of DeltaE was 6.8 units, and the average – 2.8. The result is average.
Both photos of the black background with different exposure corrections were made in the total absence of external illumination. On the first of them you can easily see all the problem areas of the monitor (presented in augmented form), and the second – how it looks in reality, the eyes of the user.
With the black field, the hero of the review has exactly the same situation as most * VA-models. It can offer not only a deep black color, but also a much better uniformity of illumination on a black field (in comparison with all IPS-type- and TN + Film-models), which for many plays an important role in choosing a monitor.
The depth of black is maximal in the center and next to it. In the corners, the contrast ratio is reduced to 2100-2300: 1. At some points on the screen, the results were obtained at the level of 2750: 1. There were no clearly defined parasitic exposures – and this is also a big plus.
As a conclusion: such uniformity of illumination is one of the main advantages of * VA-matrices, and our display in particular. If you often watch movies or work in the dark, then you should pay attention to * VA-solutions.
Thanks to the 8-bit SVA-matrix with standard settings, Samsung monitor demonstrated high quality / uniformity gradient fillings. After manual adjustments of the main operating parameters, the quality of the tone transitions does not deteriorate until the two remaining modes of “Gamma” are switched on.
Noticeable changes in the LUT video card during the calibration, unfortunately, led to visible damage to the gradient fill: a large number of transitions with parasitic hues in the area of 10-60%. But from this, if you want to achieve an ideal color rendition, you can not escape.
In terms of matrix speed, the new Samsung C34F791WQI is a big step forward for * VA-monitors. The manufacturer not only seriously worked on the response time of pixels, including on transitions between dark shades, but also increased the frequency of vertical scanning to 100 Hz – absolutely adequate and sufficient level for the game display. Due to such improvements, the end user will receive a completely different experience and impressions from working with a modern * VA-monitor.
The speed problems that you’ve probably encountered with your previous monitor with a matrix of this type in the new Samsung have come to naught! The model is not inferior to its IPS-type competitors, and OverDrive’s factory overclocking is performed at a much higher level – artifacts that are distinct in real work are completely absent, and trains are minimal.
To verify the accuracy of the 100 Hz, we conducted an additional test using the site www.testufo.com for skipping. Based on the result obtained, we can draw the following conclusion: there is no frame skipping, 100 Hz are real.
Complementing all this “perfection” is the technology of adaptive vertical development of AMD FreeSync, available, however, only for those with GPU graphics cards from the “red” and operating in the range 48-100 Hz for any type of connection (DP and HDMI).
In addition to increasing the speed of the pixel response, there were positive changes (albeit not so significant) in the field of viewing angles and image stability in general. The result is higher than expected – he pleasantly surprised us.
With minor changes in the viewing angle in the vertical plane, the picture on the screen does not change at all, demonstrating the level of IPS solutions. However, do not forget about the effect of Black Crush, which demonstrates itself already with small changes in viewing angle, especially if the image has many dark areas / shadows.
If you increase the angle to 35-45 degrees, the image becomes less contrast, the saturation decreases slightly, the shadows are brightened, the color shift occurs in certain shades, but all this is expressed to a lesser extent than on the old * VA matrices, Including curved ones, with the same diagonal. When viewed from above or below, similar changes occur somewhat faster (with a smaller level of deviations from the normal).
In comparison with modern IPS-type-models Samsung C34F791WQI let and does not show high stability of a picture, but in real working conditions (without “wild” viewing angles of testing) does not cause negative emotions, even among fans of the first technology – it is checked!
Crystal effect , Cross-hatching , PWMAs for color images, then it’s more the angles of the view, rather than the Glow. When viewed at an angle, the contrast of the picture falls sharply, in some cases the effect of weak posterization on complex color transitions may appear.Glow-effect on the black field in Samsung C34F791WQI is present. Depending on the user’s position in front of the screen with a black fill (or at least with black bars at the top and bottom when watching a movie in a dark room), the parasitic shade and the degree of its manifestation vary considerably. However, against the background of IPS-type-solutions Glow is still less pronounced and causes much less irritation.
Samsung C34F791WQI uses a quality semi-matte film over the protective plastic surface of the matrix.
The crystal effect on the Samsung novelty screen is invisible, the anti-glare properties are preserved, the picture is pleasing to the eye. When the viewing angle is changed, the visibility / visibility of the CE is not increased. The Cross Hatching effect of the monitor model is not inherent.
According to the manufacturer, the display has Flicker-Free-backlighting on quantum dots, which was confirmed during our tests. At any brightness level, SHI modulation is not used or its frequency is several or even tens of kilohertz. For their eyes, end users can be calm.
The monitor is characterized by the use of an external power supply. Parasitic sounds during operation from it and from the built-in electronic display are not detected.
Samsung’s tested novelty, Samsung C34F791WQI monitor, is not only a new look at modern * VA solutions, but also, absolutely, the new submerged height for this matrix technology. Due to the use of the quantum dot (Quantum Dot) backlighting, the manufacturer achieved a significant increase in color coverage, the viewing angles and the uniformity of the backlight on the black were slightly improved, the problems of the pixel response rate at any junctions were reduced, the native panel frequency was increased to 100 Hz.
The model will interest all buyers without exception, looking for a new 34-inch UWQHD monitor for years to come and can easily lure to their side current users of similar IPS-type solutions that are tired of the strong Glow-effect and low uniformity of the backlight on black with A large number of illuminated areas with parasitic shades. And if you compare its characteristics and features of the current value, then all competitors and all pale against its background.
The monitor uses a convenient control system, which is based on the 5-way controller, a completely new cabling system (very effective), a fairly high-quality built-in speaker system and a set of advanced front-end connectors. Attractive design, coupled with a “frameless” matrix with kurvaturoy 1500R force to take another look at the industry “monitorostroeniya” and quickly respond to the question “Why all this necessary?”. Of course, to call S34F791WQI ideal monitor, we can not. But the fact that he will not leave you indifferent – sure at 100%.
Advantages Samsung C34F791WQI:
Disadvantages Samsung C34F791WQI:
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