Главная » Разные статьи » Viewsonic vp2780 4k

Viewsonic vp2780 4k


ViewSonic VP2780-4K 27-inch Ultra HD Monitor Review

We've got ViewSonic's VP2780-4K in the lab today. Is this 27-inch, Ultra HD, IPS-based monitor worth your hard-earned money? Let's find out!

When it comes to new technology, if you want the bleeding edge you have to buy in at the premium level. This is definitely true with Ultra HD. The first screens were all 32 inches (based on IGZO parts from Sharp), and cost around $3000.

Last year we had a major price breakthrough thanks to 28-inch TN displays based on parts from Innolux. Those monitors are selling for $400-600 as of this writing. At the same time, various companies introduced 24-inch Ultra HD monitors using IPS panels from Innolux and LG. We’ve reviewed examples from Dell and NEC and found them to be extremely accurate with their factory calibrations and wide-gamut options.

Today we’re reviewing our first example of the fourth Ultra HD option: 27-inch IPS. Parts are available from AU Optronics, LG and Samsung, but the sample we’re looking at today is ViewSonic’s VP2780-4K.

Specifications

MORE: Best Computer MonitorsMORE: Display Calibration 101: Step-By-Step With Datacolor's Sypder4EliteMORE: Do It Like Tom's: Calibrating Your Monitor With Calman RGBMORE: Display Calibration 201: The Science Behind Tuning Your MonitorMORE: Gaming At 3840x2160: Is Your PC Ready For A 4K DisplayMORE: All Monitor Content

We haven’t had a ViewSonic display in the labs for quite a while but its reputation for a solid build and good quality control is still intact. The VP2780-4K impresses right off the bat with a factory data sheet that covers all major calibration parameters: grayscale tracking, gamma and color gamut over multiple saturations. All the errors are reported to be under two Delta E and our tests confirmed every number.

There is no doubt this monitor is designed for professional use, yet its price tag is a little lower than expected. With NEC’s superb EA244UHD still selling for around $1000, we expected a 27-inch IPS screen to exceed that. Luckily, we were wrong. This new ViewSonic comes in at a very reasonable $890 MSRP, with street prices a bit lower still.

The obvious question has to be: what’s missing? Well, first there is no wide-gamut option. Many pros work in the sRGB color space, especially in the film and broadcast industry, so that isn’t a huge deal. You do, however, get an EBU option — something we don’t see very often. EBU is the high-definition color space used in European broadcasts. Basically there is slightly greater saturation in green, slightly less in red and blue remaining nearly the same. In our opinion, this solidifies the VP2780-4K’s design goal as a studio monitor.

Other features include 10-bit color courtesy of an 8-bit native panel with frame-rate conversion. The backlight is a white LED, which keeps costs down yet excludes an Adobe RGB gamut. There is also a built-in input matrix that allows simultaneous viewing of up to four sources — just the thing for multi-camera monitoring.

At a price of less than $900, the VP2780-4K bears serious consideration. Can it live up to its factory calibration and professional aspirations? Let’s take a look.

Page 2

The VP2780-4K comes in a substantial carton made from heavy duty double-corrugated cardboard that could possibly withstand a small explosion. Between that and the large foam blocks inside, it’s unlikely any of these monitors will come to their new owners damaged.

The cable bundle includes a standard HDMI cable, plus a second one with a mini-MHL connector for compatible devices like phones and tablets. You also get DisplayPort and USB 3.0 connectors. Power is provided by a small external brick. A quick-start guide and CD with drivers and a full user manual rounds out the accessories.

The only assembly required is to attach the base with a captive bolt (no tools are needed). The entire package is quite solid and almost as tank-like as the NEC PA322UHD we recently reviewed. That monitor weighed in at over 45 pounds, but this ViewSonic is a much more manageable 18.4.

The anti-glare layer is typical of nearly all LCD monitors sold today, being of medium hardness (3H-rated) and good clarity. We didn’t see any grain in the image and even the tiniest details are clearly visible. Thanks to an extremely bright backlight, the image pops nicely and even at saner output levels looks well-saturated, with deep contrast.

Front bezel controls are small touch-sensitive icons that require a bit of precision to activate. Now that we’re spoiled by the controllers and joysticks used by some displays, these keys seem old school. They work reasonably well, although we found them a little finicky.

The base and upright are built very well and offer a full range of adjustments for tilt, swivel, height and portrait mode. The base is nearly 14 inches deep and over 20 inches wide, which means you're unlikely to topple the VP2780-4K over, no matter how hard you may try.

From the side, the panel looks fairly slim, and at just over two inches (including the bulge), it actually is. Some weight and bulk are saved by the external power brick which also removes a lot of heat from the panel. There is ventilation visible around the sides, but the VP2780-4K doesn't run hot. The two USB ports are version 3.0-compatible, and there are two more on the main input panel. On the back of the upright are two small cable management hooks.

The display is almost featureless across the back, with nothing but flat smooth surfaces. Once you remove the four bolts from the upright, a 100mm VESA mount is exposed. The inputs face downwards but are clearly labeled from the rear.

More and more screens are leaving analog VGA inputs behind, and the VP2780-4K is no exception. You get two HDMI 1.4 inputs which support MHL. A third HDMI port is version 2.0 compatible, which means it will support the panel’s native resolution at 60Hz. Or you can use one of the two DisplayPort inputs (one is a mini-connector). The analog audio jack is a headphone output. At the far right is the power supply connector, and the far left has the USB 3.0 upstream and downstream ports.

www.tomshardware.com

ViewSonic VP2780-4K OSD Setup And Calibration

Touching the key marked “1” brings up the main menu. The “2” key takes you straight to the input selector. The down arrow adjusts the Blue Light Filter feature, and the up arrow selects from the three user-programmable picture presets.

The OSD is divided into seven sub-menus, the first of which is contrast and brightness.

Pressing “2” brings you into each sub-menu which has sliders for various adjustments. The contrast control is grayed out in the sRGB mode which is selected in this photo. We found no need to adjust it when it was enabled in the other modes.

You can connect up to five sources to the HDMI and DisplayPort inputs. Up to four of them can be viewed simultaneously using the multi-picture function, which we’ll describe below.

There are no speakers, so volume and mute only affect the headphone output. Since audio signals can be carried by both HDMI and DisplayPort, the Audio Input option lets you choose which source you want to hear.

Color Adjust is another term for the VP2780-4K’s picture modes. sRGB is the most accurate out of the box, followed by Native, which is the default mode. User Color pops up RGB sliders which allow for very accurate grayscale tracking. There is however a caveat to that, which we’ll explain on page five.

Here is the very complete signal information screen. Not many monitors tell you all the frequency parameters like this one.

Here are the remaining image adjustments. Sharpness has four levels, of which 50 seemed the best to our eyes. Turning it to max produces very slight ringing but not as much as most displays we’ve seen.

Response Time is the VP2780-4K’s overdrive control. On some screens it can cause additional ghosting but we saw only a small amount of the artifact regardless of the setting. Standard showed a little stuttering in our tests, so we opted for the Ultra Fast option.

Aspect ratio includes 4:3, along with full screen and 1:1 options. 1:1 will show lower-res signals windowed, so use full screen if you plan to work at resolutions other than the native 3840x2160 pixels.

You’ll notice Gamma is grayed out in the above photo. Presets are available in the Bluish, Cool, Native and Warm modes. You can’t change the tracking in sRGB, EBU or User, which we found to be a limitation.

Multi-Picture is very cool. You can display either four or two sources at once. When you have two, they can be viewed side-by-side or top-and-bottom. You can also set up PIP if you wish.

Viewmode is another list of image modes that include Standard, Game, Movie, Web, Text or Mono (black & white). They will take precedence over other picture adjustments, including brightness. We left this option on Standard for our tests.

Blue Light Filter will reduce the intensity of the blue primary to create a warmer color temp.

The OSD can be viewed in nine languages. It can also be positioned anywhere on the screen, and its timeout can be up to 60 seconds. If you employ the portrait mode, check the OSD Pivot box to rotate the menu accordingly. The Save As option contains three memory slots, but they only work in the User picture mode.

You might think Memory Recall is used to access the three programmable memories, but it’s actually a factory reset. And there is no confirmation dialog. Our advice is to record all your settings after calibration in order to avoid accidentally erasing them.

Calibration

The VP2780-4K comes with a factory-certified calibration supported by a complete data sheet that is unique to each sample. Our tests results matched ViewSonic’s almost exactly. You don’t need to calibrate if you use either the sRGB or Native modes. We attempted to calibrate the User mode and were rewarded with extremely accurate grayscale tracking, but then our luck ran out. We encountered gamma issues which in turn affected color saturations below 100 percent. The bottom line is that we were unable to exceed the accuracy offered by the preset picture modes. We don’t consider this a deal-breaker. The monitor is extremely precise as-delivered, and if you want greater accuracy, you can use a software LUT provided by CalMAN or the equivalent.

If you want to try our RGB settings in the User mode, we’ve provided them below. Otherwise, we recommend using the sRGB preset. Our brightness number provides 200cd/m2 of output.

Mode sRGBBrightnessSharpnessEcoMode UserBrightnessContrastSharpnessWhite BalanceEco
49
50
Standard
35
70
50
Red 94, Green 95, Blue 100
Standard

www.tomshardware.com

ViewSonic VP2780-4K

The ViewSonic VP2780-4K ($889.99) is a moderately priced 27-inch monitor with an impressive feature set including 10-bit color technology, multiple input connections, and an In-Plane Switching (IPS) panel with a 3,840-by-2,160 Ultra-High-Definition (UHD) resolution. Its out-of-the-box color accuracy is top notch, and it delivers solid gray-scale and viewing-angle performance. It does lack advanced color settings, and its erratic function button behavior can be frustrating, but neither of these minor gripes prevents it from being our top pick for midrange UHD monitors.

Design and Features The VP2780-4K maintains the same basic design as earlier ViewSonic VP models such as the VP2770-LED and the VP2765-LED. The 11.8-pound cabinet has a matte-black finish, relatively thin (0.75-inch) bezels, and a three-legged stand assembly that gives the monitor solid footing. The fully adjustable stand offers 5.9 inches of height, 120 degrees of swivel, 28 degrees of tilt (5 forward, 23 backward), and 90 degrees of pivot maneuverability.

View All 5 Photos in Gallery

Connectivity ports are abundant. At the rear of the cabinet, facing downward, are two DisplayPort inputs (one full size, one mini), one HDMI 2.0 port, two HDMI 1.4 ports which can also connect to, and charge, compatible Mobile High Definition (MHL) devices, three USB 3.0 ports (one upstream, two downstream), and a headphone jack. Two additional USB 3.0 ports are mounted on the right side of the cabinet.

On the bottom bezel are five touch-sensitive function buttons used to access and select options in the settings menus and power the monitor on and off. The buttons can be finicky. For the most part they worked fine during testing, but every so often they would fail to respond and then become too sensitive and a bit jumpy.

Picture settings include Brightness, Contrast, and seven picture presets (sRGB, Bluish, Cool, Native, Warm, User, and EBU). The EBU (European Broadcasting Union) setting can is used for video production and editing, and the User setting lets you adjust red, green, and blue saturation levels. Other settings include Multi-Picture (Picture-in-Picture and Picture-by-Picture modes) for viewing multiple streams simultaneously, ECO power-saving modes (Standard, Optimize, Conserve) and five Gamma presets. Missing are advanced adjustments such as 6-Axis Hue and 6-Axis Saturation settings needed for precise calibration, like you get with monitors such as the NEC MultiSync PA322UHD and the Acer h357HU and S277HK models. However, there is a Blue Light Filter setting that can help reduce eyestrain.

The monitor comes with a three-year warranty on parts, labor, and backlight. It also bundles in a DisplayPort cable, an HDMI cable, an MHL cable, a USB cable, a resource CD, a Quick Start Guide, and a Color Calibration report.

Performance ViewSonic calibrates each VP2780-4K before it leaves the factory, and according to my testing, it's done well. As shown on the chromaticity chart below, red, green, and blue colors (represented by the dots) are very closely aligned with their ideal CIE coordinates (represented by the boxes), resulting in rich, evenly saturated colors.

The IPS panel's ability to deliver dark blacks helps punch up color quality while providing exquisite shadow and highlight detail, thanks to the panel's impressive gray-scale performance. It cleanly and accurately displayed each shade of gray from the DisplayMate 64-Step Gray-Scale test without any trace of clipping (whitewashed whites) or crushed blacks (when two or more shades of grays appear black). As a result, UHD image quality in my tests was outstanding, and small text appeared sharp and well defined.

The VP2780-4K's 5-millisecond (gray-to-gray) pixel response keeps motion artifacts to a minimum, but it was unable to squash them completely in testing; I observed slight blurring during my Crysis 3 (PC) and Call of Duty: Black Ops (Xbox 360) gaming tests. Input lag, as measured by the Leo Bodnar Video Signal Lag Tester, came to a relatively low 10.9 milliseconds, which means you won't notice any delay while trying to take out your opponents. The best input lag result we've measured to date, 9.5 milliseconds, was achieved by a dedicated gaming monitor, the BenQ XL2430T.

In testing, the monitor consumed 41 watts of power while operating in Standard mode. When set to the Optimize Eco mode, it used 31 watts, and in the Conserve Eco mode, it used 21 watts (Conserve mode is a bit dim, but not terribly so). These numbers are similar to the Acer S277HK (48 watts Standard, 33 watts Eco mode), but more efficient than the AOC U2868PQU, which used 57 watts and does not offer an Eco mode.

Conclusion The ViewSonic VP2780-4K is a solid choice if you want high-end UHD performance without spending a fortune. Its 27-inch IPS panel delivers exceptional color quality, wide viewing angles, and a crisp, highly detailed UHD image, and it aced our gray-scale tests. You get lots of features with this monitor, including multiple high-speed video inputs, a USB hub, and a fully adjustable ergonomic stand. It may not be as stylish as the Acer S277HK and it costs more, but it delivers equivalent performance and you get a lot more features. As such, the VP2780-4K is our Editors' Choice midrange UHD monitor.

www.pcmag.com

ViewSonic VP2780-4K Review

Sections

Pros

  • Fantastic colour accuracy
  • Impressive uniformity
  • High resolution
  • Versatile design

Cons

  • Better contrast available elsewhere
  • Pricier than competitors
  • Mixed screen mode quality

Key Specifications

  • Review Price: £700.00
  • 27in 3,840 x 2,160 IPS panel
  • 1 x HDMI 2.0
  • 1 x DisplayPort 2.0
  • 4 x USB 3
  • Manufacturer: ViewSonic

ViewSonic’s VP27 range has consistently impressed over the last few years thanks to its combination of a large IPS screen with good image quality and loads of features, all at a great price. With the VP2780-4K ViewSonic is taking thinks up a notch, packing in a 4K panel and ramping up the image quality. The result is a screen that has leapt from around £450 to £700. At this level it’s competing with established truly professional-grade monitors from the likes of NEC and Eizo, so the VP2780-4K has quite a lot to live up to.

ViewSonic VP2780-4K: Specs & Design

Getting things off to a good start, the mighty 3,840 x 2,160 resolution isn’t the only impressive aspect of the ViewSonic’s specification. ViewSonic says this screen is ideal for photo editing, video processing and CAD/CAM tasks because of its 100% sRGB coverage levels. It can also handle 80% of the Adobe RGB gamut, which is a decent portion for a monitor that isn’t specifically targetting use in that wider colour space. That said, it does immediately mark this screen out as being limited in scope, with pros working in AdobeRGB needing to look elsewhere.

ViewSonic is otherwise so confident of this screen’s quality that each screen is individually calibrated at the factory – and each one is packaged with a sheet of those results. The paper provided with our test screen suggests this panel will perform well: its average Delta Es allegedly dip far under the 2.0 figure we look out for, and colour temperatures look close to the ideal 6,500K level.

It’s a good start for this IPS panel, and it’s bolstered by strong connectivity. The HDMI 2.0 socket allows 4K signals at 60Hz, which isn’t possible using HDMI 1.4 connections, and it also allows 32-channel audio and a quartet of audio streams – not a major concern in a monitor but nice to have nonetheless. The ViewSonic also has DisplayPort 1.2 and four USB 3.0 connectors, although it doesn’t have a card reader or audio jacks – both features included on other panels.

All of these features come at a price: the £700 ViewSonic is more expensive than its most direct rivals. Both are 32in panels with 2,560 x 1,440 native resolutions, and both are cheaper: the Samsung S32D850T costs £470, and BenQ’s BL3200PT is ten pounds cheaper still. On the other end of the scale, the NEC EA244UHD may only be a 24in screen but it also offers a 4K resolution and includes 100% AdobeRGB coverage, but it stretches the budget further to £850.

The ViewSonic doesn’t have the physical size of its 32in rivals, but it’s got them both beat for pixel density. The VP2780-4K serves up a pin-sharp density level of 163ppi, which is far beyond the 92ppi of the Samsung and BenQ screens. That means images and text is sharper, but it also means you’ll have to scale Windows up to make it usable without squinting – so the resolution certainly has its pros and cons.

The screen can be swivelled, pivoted and tilted, it’s compatible with 100mm VESA mounts, and there’s 150mm of height adjustment. It can swing around to portrait mode, too. The ViewSonic matches the BenQ for movement, and it’s got 20mm more height adjustment than the Samsung.

There aren’t any speakers, though, and that’s not our only minor niggle. The ViewSonic’s large triangular stand means it stretches 348mm from front to back, which is far more than the 232mm BenQ and 279mm Samsung, despite those monitors having larger screens. If you on a fairly compact desk it can really make your workspace feel cramped.

ROUND-UP: The Best Windows 8 Laptops, Tablets, Convertibles and PCs

ViewSonic VP2780-4K: Setup

The ViewSonic followed an entirely conventional setup procedure – the stand was already attached when we heaved the VP2780-4K from the box, and we just had to attach the base with one screw. The screen’s depth doesn’t help, but at least the VP2780-4K is relatively light; its 8kg weight makes it more manageable than the BenQ and Samsung, both of which weigh at least 12kg.

The on-screen menu is perfectly usable, but it’s underwhelming compared to efforts elsewhere. It’s small, low-resolution and pops up in the middle of the screen, though it can thankfully be moved to the corner – nearer to the touch-sensitive buttons in the bottom-right corner.

OSD options are organised sensibly, but the four buttons don’t make things easy – they’re labelled with numbers or arrows, and that’s it. The BenQ served up an innovative controller to navigate its menus, and the Samsung’s slicker software was configured with physical buttons that had clear icons.

Mike has worked as a technology journalist for more than a decade, writing for most of the UK’s most well-known websites and magazines. During his time writing about technology he’s developed obsessio…

Unlike other sites, we thoroughly test every product we review. We use industry standard tests in order to compare features properly. We’ll always tell you what we find. We never, ever accept money to review a product. Tell us what you think - send your emails to the Editor.

www.trustedreviews.com

ViewSonic VP2780-4K

Author: Adam Simmons Date published: May 5th 2015 Some ad blockers will prevent the loading of the calibration and contrast tables. Please disable them or add an exception for our website. Please help support the website by purchasing your monitor or other computer peripherals and components using the link at the bottom of this page.

Introduction

There are many different paths that users can take when it comes to buying a monitor, and indeed no single product is perfect. For many users, though, a screen that delivers a crisp and vibrant image is highly desirable. The ViewSonic VP2780-4K is one of a growing number of screens to combine a ‘4K’ UHD (3840 x 2160) resolution with an IPS-type panel. It all looks good on paper, but we give this 27” pixel pusher a good testing with a range of games, movies and other applications to see how it performs out there in the real world.

Specifications

The monitor uses a 27” ‘4K’ UHD panel, which makes use of an LG AH-IPS (Advanced High–Performance In-Plane Switching) matrix. The colour processing is 8-bit + FRC dithering, bringing it up to 10-bit. In addition to this a 14-bit LUT is used alongside a 3D LUT to further enhance colour precision and provide smooth gradation performance. A rather precise-sounding grey to grey response time of 5ms is specified, although in reality you can expect this to change depending on the shades involved in the transition. Some of the key ‘talking points’ of the monitor have been highlighted in blue below.

The key ‘talking points’ of the specification have been highlighted in blue below.

Panel type: LG Display LM270WR2 AH-IPS (In-Plane Switching) LCD PanelNative resolution: 3840 x 2160Typical maximum brightness: 350 cd/m²Colour support: 1.07 billion (8-bits per subpixel plus dithering)Contrast ratio: 1,000:1 (20m:1 Dynamic Contrast)Viewing angle: 178º horizontal, 178º verticalPower consumption: 46.5W typicalBacklight: WLED (White Light Emitting Diode)Typical price as reviewed: $860 USD

Features and aesthetics

From the front, the monitor has a fairly sensible no-frills office-like appearance. The stand base is a large forked foot, made from matte black plastics. It is also quite deep and on our desk it brought the screen closer to our eyes than we would have liked, with the screen sitting >10 inches from the rear of the stand. The same matte black plastic is used on the fairly chunky bezels, which measure ~21.5mm (0.85 inches) at all edges. A very light matte anti-glare screen surface is used, as explored later.

The OSD (On Screen Display) is controlled by touch-sensitive buttons at the right side of the bottom bezels. There is a fairly funky power LED, which is a strip running diagonally from inside lower right bezel to the outside lower right bezel. The LED itself only illuminates the half of this strip closest to the bottom corner rather than lighting the whole thing up. It glows dark blue when the monitor is on and amber when in standby. The following video shows the menu system of the monitor, the buttons used to control it and the power LED.

From the side the monitor is reasonably svelte; 26mm (1.02 inches) at thinnest point, protruding out to around 56mm (2.20 inches) centrally. The stand protrudes back from that further. There are also 2 USB 3.0 ports at the right side, as shown below.

The stand is fully adjustable, offering; tilt (5° forwards, 23° backwards), swivel (60° left and 60° right, height adjustment (150mm or 5.9 inches) and pivot (90° clockwise rotation into portrait, shown below).

The rear continues with the matte black plastic. The stand attaches centrally by 100 x 100mm VESA and can be removed to make way for an alternative VESA 100 stand or mount. There is a Kensington lock socket at the bottom left and some cable tidy clips just above the centre of the stand base.

The ports are down-firing and are, from left to right; USB 3.0 upstream plus 2 USB 3.0 downstream ports (4 downstream ports in total), 2 HDMI 1.4 ports (with MHL 2.0), HDMI 2.0, DP 1.2a, MiniDP 1.2a, 3.5mm headphone jack and DC power input (external power brick). HDMI 2.0 and DP 1.2a supports 60Hz at 3840 x 2160, whereas HDMI 1.4 or earlier and DP 1.1 is limited to 30Hz at 3840 x 2160. Please note that DP 1.2a does not mean that the monitor is Adaptive-Sync compatible, as that is an optional and not compulsory extension of DP 1.2a that is not used here. The necessary power cables, a DisplayPort cable, HDMI cable, MHL cable and USB 3.0 upstream cable is generously included in the box.

Calibration

Subpixel layout and screen surface

A very light matte screen surface is used on this monitor, which some users may refer to as ‘semi-glossy’. This provides strong glare-handling characteristics in moderate lighting conditions without affecting the vibrancy or clarity as much as stronger matte screen surfaces. There is only a slight graininess to the screen surface, which does not give the image a ‘smeary’ or overly granular appearance.

The subpixel layout for the panel is RGB (Red, Green and Blue) stripe. This is the most common layout and is the default expected by common Operating Systems including Microsoft Windows and Apple’s Mac OS. Apple users can expect strong text clarity without the ‘fringing’ issues caused by other subpixel layouts. Windows users should expect the same, but are also able to run ‘ClearType’ to optimise the text-viewing experience according to preferences. There should be no particular issues unless you have previously run ‘ClearType’ on a monitor with a different sub-pixel layout, in which case you should run it again with different selections.

Testing the presets

The VP2780-4K features a range of settings that can be adjusted through the OSD. There are what you may consider traditional presets on the monitor, referred to as ‘Viewmode’ settings; ‘Standard’, ‘Game’, ‘Movie’, ‘Web’, ‘Text’ and ‘Mono’. Somewhat confusingly, there are some other presets available in the ‘Color Adjust’ menu; ‘sRGB’, ‘EBU’, ‘Bluish’, ‘Cool’, ‘Native’, ‘Warm’ and ‘User Color’. If you wish to use any of these ‘Color Adjust’ settings, then the ‘Viewmode’ is automatically set to ‘Standard’ – in other words, these sets of presets override one another.

Rather than testing all of these presets, which would be tedious to say the least, we have selected a few to concentrate on in the table below. In addition we will focus on some other options available in the OSD such as the ‘Blue Light Filter’ and ‘Gamma’ settings. Our test system used an Nvidia GeForce GTX 970 connected using a MiniDP to DP cable. The monitor was left in its ‘plug and play’ state on Windows 8.1, without any additional drivers or ICC profiles specifically loaded. Aside from our ‘Test Settings’, assume any setting not mentioned here was left at default.

Preset Mode Gamma (central average) White point (kelvins) Extra OSD features Notes
Color Adjust = sRGB 2.3 6049K Brightness Fairly dim but otherwise nicely balanced. An excellent variety of shades with good depth and richness overall.
Color Adjust = Native (Factory Defaults) 2.3 6104K Brightness, Contrast, Dynamic Contrast, Gamma, Blue Light Filter Extremely bright with a good vivid look and pleasing depth and variety amongst many shades. Brightness alone causes some oversaturation in places. It looks quite like ‘sRGB’ really, but brighter by default.
Color Adjust = Warm 2.1 4867K Brightness, Contrast, Dynamic Contrast, Gamma, Blue Light Filter As the name suggests, an obvious warm tint to this mode. This is essentially a ‘Low Blue Light’ setting, suitable for relaxing evening viewing.
Color Adjust = User Color 2.0 6178K Brightness, Contrast, Dynamic Contrast, Blue Light Filter Very bright with poorer balance than some of the other presets. Some shades appear more muted than they should whilst others appear oversaturated.
Gamma = 2.0 1.9 6109K Brightness, Contrast, Dynamic Contrast, Gamma, Blue Light Filter As ‘Native’, but an obvious lack of depth to some shades giving a slightly washed out look.
Gamma = 2.4 2.3 6118K Brightness, Contrast, Dynamic Contrast, Gamma, Blue Light Filter This changes the gamma curve compared to the native ‘2.2’ setting, despite the average remaining at 2.3 in reality. The low end of the gamma curve is ‘upset’ so that some of the darkest shades blend together too readily – giving a loss of detail.
Blue Light Filter = 0 2.3 4323K Brightness, Contrast, Dynamic Contrast, Gamma, Blue Light Filter This gives a ‘maximum’ blue light reduction, giving an even warmer look to the image than the ‘Warm’ setting. You can set this filter between 0-100 in single unit increments according to preferences.
Viewmode = Game 2.1 6131K One of the better balanced game modes we’ve seen on a monitor, although that’s not saying much. Brightness is fixed and will be brighter than some users will like and the balance is quite similar to ‘User Color’ (a bit off compared to some of the other presets).
Viewmode = Mono 2.7 6901K This is an interesting and quite unusual mode which does what you would expect – makes everything black and white or greyscale. The distinction between greys is far worse than on any other mode, however.
Test Settings (as below) 2.3 6135K Brightness, Contrast, Dynamic Contrast, Gamma, Blue Light Filter As ‘Standard’ with better daylight colour balance and lower brightness. Good vibrant and varied look to the image.
Low Blue Light = Reading -70% 2.2 4896K As above, but another reduction in blue light output. The blue colour channel has been weakened massively – this is an effective mode for users with sensitive eyes or anybody wishing to minimise blue light exposure before bed.
User 2.2 6728K Gamma, Hue, Saturation, Color Temperature (Normal, Bluish, Reddish, User Define) Similar to factory defaults, but brighter and ‘cooler’ in tint – plus RGB channels now unlocked.
Test Settings (as below) 2.2 6493K Brightness, Contrast Simply sRGB with reduced brightness, as we found this preset to be very pleasing.

The monitor comes factory calibrated in its ‘Native’, ‘sRGB’ and ‘EBU’ presets as shown by a 2-page factory calibration reports that is included with each unit. Unfortunately our test sample did not include this. The overall balance of the image was pleasing, despite none of the ‘presets’ actually meeting the ‘6500K’ or ‘2.2 gamma’ targets. Being overly rigid with these targets is not necessary for most users as the ideal targets actually vary depending on ambient lighting – which is rarely strictly controlled. For users where absolute adherence to certain standards are vital, a calibration and indeed a number of re-calibrations over time using your own equipment are essential. The gamma curve using our ‘Test Settings’ is shown below. It tracks at 2.3 on average due to some ‘sagging’ centrally, but shows good curve conformity at the upper and lower end on this representation. Importantly, it gave a pleasing end-result – a rich and varied image with good shade depth overall. The colour balance was also good, as although the white point sat below 6500K (which is perfectly valid depending on lighting conditions) there was no green tint or relatively green channel weakness.

The same can’t be said if you use the ‘User Color’ preset, which is required to manually adjust the colour temperature. The colour channel can of course be corrected to whichever value you want, but the gamma can’t be adjusted at all in the OSD. You’re left with a gamma curve that looks quite bizarre as shown below.

We also tested a number of other settings, including a few different ‘Gamma’ settings. These certainly changed the gamma, although it never quite seemed to adhere to the specified target values. The ‘Blue Light Filter’ setting proved useful and did exactly what it set out to do, as a customisable ‘Low Blue Light’ mode. Given the poor gamma handling in the ‘User Color’ mode, this was also preferable to simply lowering the blue colour channel yourself. We also found that the ‘Warm’ setting provided a good setting of this type as well, so overall certainly a monitor that can provide relaxing evening viewing.

Test Settings

For our ‘Test Settings’ we simply used the factory defaults (Color Adjust = Native) with lowered brightness. This provided what we feel was a rich and nicely balanced image, taking advantage of the screen’s factory calibration. Given our uses and that the ideal targets really depend on room lighting, which in our case is a bit variable, a little deviation from the usual ‘6500K’ and ‘2.2 gamma’ is perfectly acceptable. If you wish your monitor to adhere more strictly to these targets or other specific targets then calibration and indeed re-calibration over time with your own colorimeter is recommended. For other users we feel the factory setup is very pleasing, aside from the retina-scorching brightness.

Any settings not mentioned here were left at default. We have included other alterations we made in the OSD including the ‘Response Time’ setting here just for reference.

Brightness= 22 (according to preferences and lighting)

Response Time= Advanced

Contrast and brightness

Contrast ratios

A Konica Minolta CS-200 luminance meter was used to measure the luminance of white and black using a range of settings. From this, contrast ratios could be calculated. The table below shows these values and ratios, where black highlights indicate the results of our test settings and blue highlights indicate the ‘best’ values recorded (highest white luminance, lowest black luminance and highest contrast ratio). Aside from for our test settings, assume any setting not mentioned in the table was left at default.

Monitor Profile White luminance (cd/m²) Black luminance (cd/m²) Contrast ratio (x:1)
100% brightness (Factory Defaults) 402 0.33 1218
80% brightness 340 0.28 1214
60% brightness 280 0.23 1217
40% brightness 219 0.18 1217
20% brightness 156 0.13 1200
0% brightness 92 0.08 1150
Color Adjust = sRGB 96 0.08 1200
Color Adjust = Warm 358 0.31 1155
Color Adjust = User Color 407 0.31 1313
Gamma = 2.0 406 0.32 1269
Gamma = 2.4 406 0.33 1230
Blue Light Filter = 0 309 0.30 1030
Viewmode = Game 406 0.33 1230
Viewmode = Mono 294 0.33 892
Test Settings 163 0.14 1164
Low Blue Light = Reading -70% 121 0.19 637
User 296 0.31 955
Test Settings 163 0.17 959

The average static contrast on the VP2780-4K with only brightness adjusted was recorded as 1203:1, which is pleasing. Because our test settings simply involved a change in brightness, contrast remained similar at 1164:1. The peak contrast ratio recorded was 1313:1, in the ‘User Color’ setting which lacks the fairly rigorous calibration of some of the other settings. Static contrast remained above 1000:1 even with the maximum ‘Blue Light Filter’ applied (a setting of ‘0’). It only dipped below this in the rather unusual ‘Mono’ setting. The maximum luminance recorded was a very bright 407 cd/m², whilst the minimum white luminance was a not terribly low 92 cd/m². This provides a good luminance adjustment range of 315 cd/m², although some users would prefer a lower minimum without a loss of contrast.

A ‘Dynamic Contrast’ setting features as well, which can be activated in certain presets as explored in the calibration section. This allows the backlight intensity to adjust dynamically according to the levels of light and dark on the screen. The backlight responded extremely rapidly to changes in the makeup of a scene, which meant it was very ‘dynamic’ and effective at doing what it is supposed to. These rapid brightness fluctuations are also fairly annoying and there is no way to limit the brightness at the upper end – giving an uncomfortable brightness if fairly light content is being displayed. As with all settings of this type on modern LCD monitors, the backlight is always controlled as one unit and therefore can’t provide anything more than a compromise where mixed content is displayed. And in real use, mixed content is almost always displayed. Needless to say we aren’t fans of such settings, but it is there if you wish to use it.

PWM (Pulse Width Modulation)

The monitor does not use PWM (Pulse Width Modulation) to regulate backlight brightness and instead uses DC (Direct Current) modulation. The monitor is therefore considered to be ‘flicker-free’, as advertised, which will come as welcome news to those who are sensitive to flickering or other aspects of PWM usage.

Luminance uniformity

Whilst observing a black screen in a dark room, using our test settings, no significant backlight bleed or clouding was observed. You can see in the image below that there are only some very small patches here and there, for example in the bottom left corner. This was not an issue at all in practice and was completely drowned out by something we will come onto shortly called ‘IPS glow’. The image below was taken from a few metres back with the camera as central as possible to eliminate this ‘IPS glow’.

Many people reading this will probably be familiar with ‘IPS glow’, but for those who aren’t it’s a typical phenomenon associated with panels of this type. If you observe dark content in a moderately bright to dim room you can see that the bottom corners in particular (from a normal viewing position) have a silvery blue or slightly golden sheen to them. This sheen ‘blooms out’ if you move your head and becomes very noticeable off-angle. Some of the implications of this from a normal viewing position are explored later on in the review – and there is also a video showing how it manifests itself ‘off-angle’.

We used the Spyder4Elite to assess the uniformity of white on the screen, measuring the brightness of 9 equidistant white quadrants running from top left to bottom right of the screen. The following table shows the luminance recorded at each quadrant alongside the brightness deviation between a given quadrant and the brightest point recorded.

The luminance uniformity was strong overall. The maximum luminance was recorded at ‘quadrant 2’ at the top central region of the screen (165.8 cd/m²). The greatest deviation from this was recorded at ‘quadrant 9’ at the bottom left (146.3 cd/m²), which is 12% dimmer than the brightest point. Elsewhere deviation from the brightest point was just 1-8%, which is excellent. It is worth remembering that individual units can vary when it comes to uniformity and indeed there may be further deviation beyond the 9 quadrants measured here.

For those who prefer a visual representation of these results, the contour map below shows the deviations graphically. Here darker greys represent lower luminance than lighter greys and hence greater deviation from the brightest point. Percentage deviation between each quadrant and the brightest point are also shown.

The Spyder4Elite was also used to analyse variation in the colour temperature (white point) of the same 9 quadrants. The graphic below represents deviation between each quadrant and the 6500K (D65) daylight white point target. Deviations here are given as DeltaE values, where a DeltaE >3 represents deviation that could readily be noticed by most users by eye. On this map darker colours represent higher deviations from 6500K than lighter colours.

The results here are reasonable. The point closest to 6500K is ‘quadrant 2’, the top central region. There is significant deviation in colour temperature shown when comparing the bottom region of the screen to this top central region. The values shown here are ‘only just’ significant, however. If you compare any quadrant other than ‘quadrant 2’ to any of the other quadrants then the deviation is not considered significant. As above, you can expect some variation beyond the points analysed and also between individual VP2780-4Ks.

Contrast in games and movies

On Battlefield 4 the contrast performance was good overall. There was a fair degree of detail lost towards the bottom two corners of the screen and some slight detail lost at the flanks due to IPS glow. Elsewhere there was a pleasing level of detail in dark areas. Bright elements contrasted well and therefore stood out nicely. Light shades such as white appeared slightly grainy due to the screen surface, but this wasn’t excessive and didn’t have a smeary quality as you see with some stronger matte surfaces.

On Dirt 3 the contrast performance was also good overall. There was some loss of detail in areas of the screen affected by IPS glow, meaning the car interiors, car tread patterns and the like lacked proper distinctness. Elsewhere on the screen such details were visible quite distinctly. Bright elements stood out well and indeed the variety of very light shades was rather impressive. Slightly different hues for car headlights and other artificial lights added a nice variety to night scenes, again with a slight but not excessive graininess from the screen surface.

We also assessed the contrast performance using the Blu-ray of Skyfall. Because this movie is presented in a 2.40:1 (16:9 letterbox) format, there are black bars at the top and bottom which ‘absorb’ much of the IPS glow. The level of subtle detail was very good in this film, with wrinkles on clothes and hair strands in dark areas showing quite decent distinction. Brighter elements contrasted well, perhaps best showcased on the night scene in Macau where candles, lanterns and fireworks light up the night sky. There wasn’t the same ‘pop’ that you’d get on a VA panel with very strong static contrast or indeed a glossy monitor, but things still stood out nicely.

Lagom contrast tests

We used Lagom’s tests for contrast to help analyse specific weaknesses in contrast performance which may not be obvious during other testing. We observed the following.

  • Performance on the contrast gradients was very good with each block appearing distinct from others.
  • Performance on the black level test was good. All blocks were distinct from the background, with the first two blending in quite readily (as is acceptable within usual gamma standards). No obvious dithering was present, just a little bit of very well-masked temporal dithering in places.
  • All checkerboard patterns were distinct from the background in the white saturation test, although the final block was a little less distinct than it could be. It was hidden somewhat by the misty grain of the screen surface.
  • The greyscale gradient was impressively smooth without obvious dithering or visible banding.

pcmonitors.info

Viewsonic VP2780-4K Monitör İncelemesi

ViewSonic amiral gemisi olarak nitelendirilebilecek yeni VP2780-4K ile profesyonel serisini güçlendiriyor. Peki nedir bu profesyonel ya da profesyonel serisi? VP serisi altındaki profesyonellere yönelik monitörler, özellikle yüksek hassasiyette ve kalitede görüntüler ile çalışması gerekenler için tasarlanan ürünler. VP2780-4K modeli de 3840×2160 piksel çözünürlüğü 27 inçlik ekran alanında sunan, farklı bağlantılara sahip, 60 Hz, 5 Ms değerleri sunan yeni üst seviye monitör olarak dikkat çekiyor. Ancak elbette bunun ötesinde H-IPS panel, 14 bit 3D LUT, fabrika çıkışı kalibre edilmiş renkler gibi bazı ilgi çekici ve öne çıkan noktalar da var. İlk çıkan 30 Hz 4K monitörlerin ardından pek çok yenilik ve geliştirme barındıran VP2780-4K başka neler sunuyor, bu özellikler ne kadar başarılı sorularını incelememizde detaylarıyla cevaplıyoruz. iyi seyirler dileriz…

  • 00:10 – ViewSonic VP2780-4K monitör kimler için? VP serisi ViewSonic’in profesyonel serisi.
  • 00:20 – 4K Çözünürlük nedir? 3840×2160 piksellik bir alan, 8 milyonun üzerinde piksel ile ultra yüksek çözünürlük.
  • 00:30 – Görsel ya da video düzenleyenler ve yüksek hassasiyete sahip görüntülerden analiz yapanlar için yüksek çözünürlük önemli.
  • 01:00 – Renk doğruluğu ve profesyonel iş akışında renkler.
  • 01:30 – Panel türü, renk motoru ve kontrol tablosu.
  • 02:15 – 14 Bit 3D LUT nedir?
  • 02:35 – sRGB, Adobe RGB ile CAD/CAM ve baskı tasarımları için doğru renkler.
  • 03:00 – EBU yani European Broadcasting Union standardı ile video renk kalitesinde de standartları sağlıyor.
  • 03:30 – Bu özellikler video düzenleme için de ideal.
  • 03:45 – H-IPS panel ile 178-178 derece görüş açısı ve yüksek renk kalitesi.
  • 04:20 – VP2780-4K monitörün tasarım ve ergonomisine yakından bakıyoruz.
  • 05:00 – Yanlara dönüş ve stand.
  • 05:30 – Pivot modunda dikey kullanım.
  • 06:00 – Stand ayağı, kablo toplayıcılar ve sabitleme yuvası.
  • 06:25 – Stand ayağı ile ve salt monitör olarak ağırlıklar ve VESA desteği.
  • 07:10 – Medikal kullanım alanları.
  • 07:40 – Seri numarası ve diğer detaylı bilgiler ile fabrika kalibrasyon raporunu karşılaştırdık.
  • 08:15 – ViewSonic VP2780-4K Color Calibration Factory Report yani renk kalibrasyonu fabrika raporu. Bu raporda her monitörün tek tek Chroma7121 ve Croma 2326 ile Delta E için sRGB, Native ve EBU olarak ölçüldüğünü görebiliyoruz. Profesyonel kullanımda bu sayede yüksek renk doğruluğu sağlanıyor.
  • 10:00 – Kutu içeriğine yakından bakıyoruz. DisplayPort, HDMI 2.0, MHL, USB 3.0 kabloları.
  • 11:10 – VP2780-4K monitörün adaptörü ve güç tüketim değerleri.
  • 12:02 – Stand ayağını nasıl monte ediyoruz?
  • 12:44 – Portlara yakından bakıyoruz: USB 3.0, HDMI 2.0, MHL, DisplayPort, Mini DisplayPort, kulaklık, adaptör.
  • 14:22 – Kensington kilidi.
  • 14:30 – Yan USB 3.0 portları.
  • 14:35 – Dokunmatik tuşlar.
  • 24:47 – Ekran çok parlak ayarlanabiliyor, parlak set ışıkları altında bile net görünüyor.  Kamera çekimlerinde gördüğünüz görüntüde, monitör dışındaki arkaplanımız bu yüzden olduğundan daha karanlık görünüyor.
  • 15:10 – Windows 10 altında font ölçeklendirmesi yapabilirsiniz. Fontları net gösteren bir piksel yapısı var, eski IPS türlerine göre H-IPS çok daha keskin ve net bir font görünümü sunuyor. Zira piksel yapısı geniş aralıklı değil ve gereksiz ışık kaçırmıyor.
  • 15:55 – Photoshop ya da Premier gibi Adobe yazılımlarında kullanım deneyimi muazzam.
  • 16:20 – 10 bit renk ve 14 bit 3D LUT yani Look Up Table ile renk doğruluk kontrolü renk kalitesini uç noktaya taşıyor.
  • 16:45 – Fabrika kalibrasyonu monitörü fabrika ayarlarına döndürseniz de silinip kaybolmuyor. OSD işlevlerine bakıyoruz.
  • 17:50 – İdeal ayarlar “Kullanıcı Rengi” altında kayıtlı.
  • 18:29 – OSD menü ayarlarına bakıyoruz.
  • 18:45 – 60 Hz yenileme hızı, 5 milisaniye tepki süresi ve çok düşük input lag yani gecikme değeri ile çok akıcı bir monitör. Özellikle fare kullanımında bunu hissedebiliyorsunuz. İncelediğimiz ilk 4K monitörlerden sonra bu büyük bir hız ve kontrol hissiyatı veriyor.
  • 20:30 – Blue Light Filter ve Flicker Free yani mavi ışık filtresi ve titreşimsiz tasarım uzun çalışma ve kullanım süresince gözlerin sağlığını koruyor, yorgunluğu büyük oranda azaltıyor.
  • 21:25 – Farklı görüntü modları.
  • 21:45 – Adobe Premier’de 4K Tears of Steel’i görüyoruz.
  • 22:45 – Görünüm modları arasında geçiş yapıyoruz.
  • 23:45 – Peki oyun oynamak için uygun mu?
  • VP 2780-4K ile oyun testlerimizi MSI Nvidia GeForce GTX 950 Gaming 2G İncelemesi içerisinde görebilirsiniz. Testlerde çözünürlüğü 1080p’ye indirdiğimizi hatırlatalım.
  • 24:40 – Test sistemindeki AMD Catalyst Control Center üzerinden bit değerine bakıyoruz.
  • 25:30 – Farklı test görüntüleri ile ekran renklerini, parlaklığını, pikselleri kontrol ediyoruz. Bu kısım hızlandırılmıştır ve ortam ışığı sebebiyle izlediğiniz videoda farklı alanlar yansıma içermektedir. Test sonucunda ölü piksel gibi sorunlara ya da ışık sızmasına rastlamadık.
  • 28:36 – Sonuç değerlendirme. Fabrika çıkışı olarak her bir monitör tek tek kalibre edilmiş, mükemmel renk doğruluğu ve görüntü kalitesine sahip olsn VP2780-4K, bu özellikleriyle fotoğraf, video işleme gibi profesyonel stüdyolar için olduğu kadar CAD/CAM işleri yapan tasarımcılar için de ideal.

Özellikle kendi sınıfından öteye geçen, normalde bu sınıfta aramadığımız düşük Input Lag değeri, hızlı ve akıcı kullanım sunmasıyla kullanışlı bir ekstra sunuyor. Pro Gamer kategorisinde Full HD ya da WQHD 144Hz 1 Ms modelleri tavsiye ediyoruz ancak 4K kategorisinde genel oyuncular için 60 Hz 5 Ms değerleri ile daha yüksek çözünürlükte hızlı bir oyun deneyimi sunabiliyor. Bu elbette monitörün esas tasarım amacı değil, ancak izleyicilerimizden gelen sorular doğrultusunda dahil ettiğimiz bir değerlendirme.

Sonuçta ViewSonic VP2790-4K ile birlikte karşımızda özellikle 4K profesyonel monitör kategorisinde ön plana çıkan, olgun, üst seviye bir ürün bulduk. Bütün kullanım alanları bir yana özellikle profesyonel video işlemek için ideal ve Editör’ün Seçimi ödülünü kesinlikle hak ediyor.

www.technopat.net

Смотрите также