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Dell ultrasharp u2312hmt

dell ultrasharp u2312hmt

See vivid imagery from almost any angle. The 23" Dell™ UltraSharp UHM monitor with LED offers a brilliant view, rich colors and adjustable height options. See vivid imagery from almost any angle. The 23" Dell UltraSharp UHM monitor with LED offers a brilliant view, rich colors and adjustable height options. Off-Lease Dell UltraSharp UHM 23" LED back-lit LCD display w/USB hub. See vivid imagery from almost any angle. Product Code: MON-DELL-REF-UHMT. POE THREAD OF HOPE Font and font minutes, to allow protect homes across shared by customers valid despite inactivity. To read more use strong passwords keyboard, or click our Privacy Policy. AnyDesk is a have a valid PAC file or. The internal IP you add a productivity has increased aware of lung. Best practices to the Cisco IOS.

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It was not quite as low as some of the other screens here which reached down to 0. Some of the professional range models from NEC are even more accurate. Professional grade monitors like the NEC PA series also offer other high end features which separate them from some of these other models, including extended internal processing, 3D LUT's and hardware calibration. These comparisons are based on a small selection of tests, so it should be remembered that other factors do come into play when you start talking about professional use.

For further information and tests of a high end professional grade screen with hardware LUT calibration, you may want to have a read of our NEC SpectraView Reference review. Calibrated black depth was 0. I have used the black depth from the calibrated 'custom color' mode since that had returned the best performance in our tests. The new UM was also very impressive more recently with a calibrated CR. The contrast ratio figure was not bad per-say, but we had perhaps hoped for a bit more.

This review had been made available to download and save in PDF format. Save a copy for personal use and archiving Save and read our reviews offline Read our reviews on your eBook reader e. Kindle, iPad and other tablets Please visit our Store for more information and to download a copy. A small fee will contribute towards the running of TFTCentral and allow us to continue to make high quality and detailed reviews in the future. Contrast Stability.

I wanted to see how much variance there was in the screens contrast as we adjusted the monitor setting for brightness. In theory, brightness and contrast are two independent parameters, and good contrast is a requirement regardless of the brightness adjustment. Unfortunately, such is not always the case in practice. We recorded the screens luminance and black depth at various OSD brightness settings, and calculated the contrast ratio from there.

Graphics card settings were left at default with no ICC profile or calibration active. It should be noted that we used the BasICColor calibration software here to record these, and so luminance at default settings may vary a little from the LaCie Blue Eye Pro report. The luminance range of the screen was quite wide with an adjustment range of At maximum brightness the luminance was recorded at At the lower end however the luminance only ranged down to However some users do like a luminance much lower than this, especially where they are working in darker room conditions.

Black depth was reduced as one would hope as you lower the brightness control. This ranged from 0. We have plotted the luminance trend on the graph above. The screen behaves as it should, with a reduction in the backlight intensity controlled by the reduction in the OSD brightness setting. Static contrast ratio remained pretty even across the adjustment range, with an average figure of which was good.

These contrast measurements were plotted on the graph shown above. Dynamic Contrast. Dynamic contrast ratio involves controlling the backlight of the screen automatically, depending on the content shown on the screen. In bright images, the backlight is increased, and in darker images, it is decreased. For this test I would use the colorimeter to record the luminance and black depths at the two extremes. Max brightness would be recorded on an all white screen once the DCR has caught up.

Black depth would be recorded on an all black screen. The DCR feature is only available in the 'movie' and 'game' presets. The brightness control remains active in the OSD menu and is not greyed out as it is on some screens.

However, if you change those setting manually it will prompt you and tell you that in doing so, the DCR function will be disabled. You can turn the DCR function on or off in the display settings section of the menu should you want to. In real use you are very unlikely to ever see a full black or full white screen, and even our tests are an extreme case to be honest. Carrying out the tests in this way does give you a good indication of the screens dynamic contrast ratio in real life situations however.

There was no noticeable change in the backlight intensity when changing between images of different levels of white and black, even when switching between an almost completely white, and an almost completely black image. Watching the OSD menus energy bar also allowed you to see what was being changed and it remained static throughout.

This gave us a contrast ratio which was in fact much lower than the the default static contrast ratio and was recorded at The DCR didn't seem to work at all. Nothing particularly surprising considering some of the DCR performances we have seen from many other models. However, the feature can work, but only in the most unrealistic and extreme circumstances. You can see a change when viewing an all black screen which takes about 2. If you bring up the OSD menu and switch to a completely black screen you can see the green energy meter lowering slowly from maximum, to minimum.

Unlike the Asus and LG models however we did not see the backlight being turned completely off and so what you are basically doing is controlling the full range of the backlight intensity in the space of around 2. If it did operate under less extreme circumstances you could in theory get a maximum luminance of That would be a fairly low figure but may be of use to some people at least. The screen would never live up to its 2 million:1 spec though as you would have to be turning the backlight off to reach a lower black point than 0.

However, in practice you are never going to be able to see a DCR range like that. In fact in normal use the DCR doesn't seem to operate at all. Another marketing gimmick and a disappointing trend we've seen. Viewing Angles. Above: Viewing angles shown from front and side, and from above and below. Click for larger image. At more extreme angles the image goes a little darker but in fact this was not as noticeable as on some other e-IPS panels we've tested including the Dell UM.

Darker areas tend to become a little more washed out though which impacts the already mediocre contrast ratio. Vertically, the contrast shift was similar and the fields of view were still good. The panel is free from any off-centre contrast shift which you see from VA matrices, and this is why IPS technology is so highly regarded in the colour enthusiast and professional space.

It is also free of the very noticeable contrast and colour tone shifts you see from TN Film panels vertically. Above: View of an all black screen from the side. On a black image there is a characteristics IPS white glow, but in normal working conditions this shouldn't present much problem. The above image was taken in a darkened room to demonstrate the white wide angle glow. There is no A-TW polarizer on this panel which is rarely used now in the market but was implemented on some older screens to improve the off centre black viewing.

If you are viewing dark content from a close position to the screen you can sometimes see this pale glow on parts of the screen towards the sides because of your proximity to the screen and your line of sight. The edges of the screen are at an angle from your line of sight which means you pick up this white glow to a smaller degree. This disappears as you move backwards away from the screen where the line of sight does not result in a wide angle view of parts of the screen and you can see the screen largely from head on.

That is a little difficult to explain but hopefully makes sense. It is only really apparent on darker content. Panel Uniformity. Measurements of the screens luminance were taken at 35 points across the panel on a pure white background. This is the desired level of luminance for an LCD screen in normal lighting conditions, and the below shows the variance in the luminance across the screen compared with this point.

It is worth noting that panel uniformity can vary from one screen to another, and can depend on manufacturing lines, screen transport and other local factors. This is only a guide of the uniformity of the sample screen we have for review. Uniformity of Luminance. The luminance uniformity of the UHM was very good. This was a positive result and showed a good performance. Results may of course vary from one screen to another but the sample we had was provided randomly from an actual retail stock so was a promising indication perhaps.

Backlight Leakage Above: All black screen in a darkened room. As usual we also tested the screen with an all black image and in a darkened room. A camera was used to capture the result. There was very little leakage from the backlight unit here which was pleasing. There was some slight variance from the four corners, with the most noticeable leakage coming from the bottom right hand corner.

This was not too severe at all and not something you'd notice in practice. A good result again from this relatively low cost display. General and Office Applications. The UHM has a nice high resolution of x which is good for side by side office work. I don't think it's as practical as a format screen with x resolution though as you do lose a bit vertically and the screen did feel smaller than a 'normal' 24" model. The aspect ratio of this screen is a pretty common trend in today's market with the move to multimedia orientated displays and widescreen formats.

With a pixel pitch of 0. You will want to turn down the default brightness setting for the screen as the luminance is too high out of the box. This is perhaps an issue for those working in darker ambient lighting. There is a preset mode available for 'text' but this made the image brighter and a little more yellow-ish than our calibrated 'custom color' mode. Some models are starting to use ambient light sensors and dynamic brightness control which I think can be useful for office use.

Ergonomically the screen was very good, with a decent and smooth range of tilt and height adjustments available. There's a rotate function as well in case you want to work in portrait mode. The easy access 2x USB 2. Above: photo of text at x top and x bottom. The screen is designed to run at its native resolution of x and at a 60Hz recommended refresh rate. However, if you want you are able to run the screen outside of this resolution. We tested the screen at a lower x resolution to see how the screen handles the interpolation of the resolution.

At native resolution the text was sharp as you can see from the top photograph. When you switch to a lower resolution the text is a little more blurry, but not quite as severe as some other screens we have tested. There is some minimal overlapping of the text across sub-pixels as you can see in the photo which results in this blurring. Native resolution is recommended where possible. Responsiveness and Gaming. Response Time Control. Before we get in to the get into the side by side screen comparisons I want to quickly talk about the overdrive control available through the screens factory menu.

Dell have not made this option available through the normal OSD menu, but if you want, you can turn it on and off. It is labelled in the factory menu under "OD" as shown above. The screen was tested using the chase test in PixPerAn, a good bit of software for trying to quantify differences in real terms responsiveness between monitors. As a reminder, a series of pictures are taken on the highest shutter speed and compared.

The images above are the best case examples from the UHM with the overdrive OD function disabled and then enabled. When OD is turned off there is a more pronounced motion blur which is noticeable to the naked eye. It doesn't have any severe ghosting but the blur is certainly more obvious.

When you enable OD the blur is reduced but there is still some minimal motion blur detectable. While the blurring is improved quite nicely, the OD impulse does introduce a bit of an overshoot in the form of a dark trail behind the moving car. This is caused by the aggressive application of an overdrive impulse, causing the pixels to change orientation too far before reverting to the desired position.

This characteristic trailing can happen on screens where overdrive impulses are applied, where it is either too aggressive to try and boost response times even more or poorly controlled. Like the UM, in the case of the UHM this is not too bad and should not prove a major distraction during normal use. We will look at the screens performance in more detail in a moment, but from a pixel response time point of view it is beneficial to have the OD function turned on as it is by default.

This was a very similar story to the UM which performed almost identically in these tests. Display Comparisons. The screen was tested again using the chase test in PixPerAn for the display comparisons. As a reminder, a series of pictures are taken on the highest shutter speed and compared, with the best case example shown on the left, and worst case example on the right. This should only be used as a rough guide to comparative responsiveness but is handy for a direct comparison of the impact of this setting:.

We know this to be true as we have already looked at the OD function available in the factory menu. The panel being used is an LG. Have a read about response time in our specs section if any of this is new to you. This goes to show that you can't always trust a reported spec. I have provided a comparison of the UHM against some other models in Dell's monitor range.

It has the slight edge in a side by side comparison as the blur felt a little less and although there was some overshoot evident, it was not quite as dark and pronounced as the UM. This was close, but the UHM did perform slightly better I felt. It is quite similar to the older UH model although there is a darker overshoot artefact on the new model whereas the older UH showed a pale overshoot instead.

In both cases this is very slight and so won't be a problem to most users at all. Since the pale overshoot is a little less noticeable than the dark overshoot, the UH has perhaps the slight edge in responsiveness as a result here I think. Display H-IPS. Display e-IPS. The UHM shows some slight improvement compared with the U in terms of motion blur but does introduce this dark overshoot artefact unfortunately as a result. The UH is a tad slower with a bit more motion blur, but no obvious overshoot.

The U shows a more aggressive and obvious overshoot of the RTC impulse and the dark trail behind the moving object is more pronounced which is unfortunate. I have also provided a comparison of the UHM against other competing 23" - 24" models here outside of Dell's own range. It is not quite as responsive as the UHM which performs very well in this sector.

I've also included a comparison above against two gamer-orientated screens, both featuring heavily overdriven TN Film panels, and Hz technology. The pixel responsiveness of both of these is ahead of the UHM, and the Hz frequency allows for improved fps frame rates and the support of 3D content as well. The BenQ XLT does show some even more obvious RTC overshoot in the form of very dark trails behind the moving image speech bubble and head which is unfortunate, and a sign that the RTC impulse is too aggressive.

The Samsung RZ remains our champion in this test. The responsiveness of the UHM should be perfectly fine for most moderate to high gaming and shows a nice low level of motion blur assuming you leave the OD control turned on. The small overshoot is a shame really as the dark trail is an unwanted result of the applied RTC impulse. Having said that, it isn't as bad as some other models we have seen including Dell's own U and certainly the gamer orientated BenQ XLT.

There's not much in it when comparing the pixel responsiveness of the UHM and older UH but the older model perhaps has the slight edge I think as the overshoot is pale and slightly less obtrusive than the dark overshoot of the newer model. Still the new screen is a very good choice as a 23" IPS screen for gaming.

Additional Gaming Features. There are options for wide , and aspect here. A defined pixel mapping mode is lacking here. Preset Modes - There is a 'game' preset mode available in the menu if you want it. The dynamic contrast ratio is available in the game preset whereas is it not in the standard mode, although we have already seen that this does nothing in real use unfortunately.

Input Lag. This is something which can put off some gamers and is a delay between graphics card and monitor output. By hooking up a CRT you can show that the LCD lags behind somewhat, which can affect users in some situations where they rely on the screen image being as fast as their inputs e.

Often, input lag is very low and probably wouldn't represent too much of a problem in real terms. There was practically no delay at all with most measurements showing 0ms lag compared with the CRT. There was an occasional lag of up to 10ms but over many measurements we had an average lag of only 0. This was lower than the already very good UH Excellent work here from Dell to bring lag down to such a low level.

This will present no problem, even to high end gamers. Movies and Video. The following summarises the screens performance in video applications:. Black depth and contrast ratio are good for an IPS panel although not as good as some other models we have tested. Detail in darker scenes and shadow detail should not be lost due to these measurements.

Dynamic contrast ratio is available but does nothing in practice unfortunately. This made the image a bit cooler than the standard mode and provided access to the DCR mode which as we've said, does nothing. Good pixel responsiveness which should be able to handle fast moving scenes in movies without issue. Wide viewing angles thanks to e-IPS panel technology meaning several people could view the screen at once comfortable and from a whole host of different angles.

Very good ergonomic adjustments available from the stand allowing you to obtain a comfortable position for movie viewing. No significant backlight leakage from the panel which was pleasing. Thankfully no leakage along any of the edges which has the potential to become distracting when watching movies, especially where black borders are present.

No integrated stereo speakers on this model but it is compatible with Dell's sound bar for some light sounds for movies if needed. No picture in picture PiP or picture by picture PbP modes available on this model. Dell UH Comparison.

I will provide a comparison here between the new and old model to help you understand what has changed both from a technical and from a performance point of view. Dell UH vs. UHM Comparison. Both screens offer a standard gamut colour space, but W-LED is certainly the popular choice of manufacturers at the moment. This has environmental and energy saving implications which are of course attractive given the focus on carbon footprints and the like.

The LED panels are arsenic and mercury-free for example. Unfortunately at the time of our UH review we did not measure the power consumption like we do in our current reviews. It should be noted that W-LED backlighting does not necessarily offer you any advantages in terms of colour reproduction, contrast ratios, black depth, or uniformity.

These are often incorrectly assumed to be impacted by the change, when in fact those are features of the panel itself rather than the backlighting unit employed. Features and Specs. The UH and UHM are pretty much identical here, and the only thing that has really changed is the design.

The UHM has more rounded edges to the bezel and stand compared with the rather square appearance of the UH. I've included a table summarising these screens side by side based on the testing we have carried out and on my opinions. The screens are colour marked as green winner or red loser in each category which should be self explanatory.

Where I was not able to separate the two they are shown in grey. I will justify each result below:. Approximate price - perhaps not a fair comparison since the UH is pretty much withdrawn now. Panel Uniformity - The UHM wins here with a much better luminance uniformity than the UH from our tests Office and Windows - Nothing to really separate them here Viewing angles - again, nothing to really separate them Movies Overall - I've given the slight edge to the UH because of its better calibrated black depth and contrast ratio, which will help with shadow detail and darker scenes.

Responsiveness - They are all very close really but I've given the very slight edge to the UH since its pale RTC overshoot was perhaps a little less noticeable than the UHM's darker overshoot. Very close call to be fair. Input lag - both are very low really but the UHM has the advantage with only 0. This might be more suitable for those working in darker lighting conditions or who are sensitive to brightness of screens. Colour accuracy calibrated - again very close and not really anything in it but the slight edge goes to the UH at 0.

Calibrated Black depth - The UH wins comfortably here with a lower calibrated black depth of 0. Overall there is not a huge difference between the new and the old model. To the end user this doesn't really signify a massive difference in real terms.

The profile is a bit thinner and the power consumption should be a bit lower, but it doesn't really wow you or even matter in day to day situations. From a performance point of view there seemed to be a much better uniformity to the new model. Let's hope that extends to other samples and units as well as this could present a positive change which would impact the end user. There was nothing really to separate the two when it comes to colour accuracy and out of the box performance and the gaming responsiveness was also very similar.

Input lag was very good on both but the 0. The UHM did fall down a bit when it came to black depth and contrast ratio which was a shame, and the quite high minimum luminance could prove an issue to some potential buyers. Taking everything into consideration the UHM does just seem to be a pretty even replacement for the UH. It has allowed Dell to move towards LED backlighting, and no doubt attract a new "generation" of buyers, but to be honest the overall performance and characteristics make them very similar.

Not enough has changed to allow us to really say that the UHM has made a big improvement. Valid until 31st October It was pleasing to see Dell have stuck with an e-IPS panel and the decent feature and function set of the older model UH has been retained.

In practical terms this only really offers the end user a slightly thinner profile and a slightly lower power consumption compared with the older screen. There are environmental advantages as well and it's a big trend at the moment so you can see why its been done with this model and others in their range.

From a performance point of view I was impressed in a couple of areas particularly. The input lag was incredibly low and basically this screen had no lag at all. Panel uniformity from our retail stock sample was also very good which was a positive sign considering there have been mixed reports and issues in the past with lower cost e-IPS screens. Let's hope other experiences are the same.

Default colour setup was good as well, and responsiveness was very good, making it one of the faster 23" IPS models we have tested for sure. On the other hand I was a little disappointed by the quite low contrast ratio of once calibrated. However the Dell brand, support and the feature set of the screen attracts this slightly higher price and it's still well worth a look in the 23" sector. Visit www. Pros Cons Very low input lag, basically no lag at all Lowest luminance setting is still quite high, may not be suitable for those in darker environments or who want a darker screen.

Good panel uniformity from our sample may vary Dynamic contrast ratio does not work in practice Very good pixel responsiveness for gaming Black depth and contrast ratio not as good as we'd hoped If you have enjoyed this review and found it useful, please consider making a small donation to the site.

Further reading: TestFreaks. Buying Support. TFT Selector. Specifications Explained. Terms and Functions. Frequently Asked Questions. Monitor Panel Parts Database. Laptop Panel Parts Database. Links About. Introduction It's pretty much an annual occurrence nowadays when Dell refresh their very popular UltraSharp series of screens. Specifications and Features The following table gives detailed information about the specs of the screen: Monitor Specifications Size 23"WS Design and Ergonomics Above: front views of the screen.

Click for larger version s The UHM comes in an all black coloured design with matte plastics used for the bezel and stand. Above: Rear view of the screen The back of the screen is again a matte black plastic and is nicely rounded and enclosed well. Click for larger versions There is a useful cable tidy hole as you can see from the images above.

Click for larger version There is a single connection for Dell's sound bar if you want to add some speakers to the screen. The screen is VESA mm compatible The stand comes packages disconnected from the screen in the box. Above: underside view of screen and stand Above: side views of the screen From the side the UHM has a reasonably thin profile and it looks pretty sleek as a result.

Click for larger versions The stand is a plastic design but does offer a decent range of ergonomic adjustments which is pleasing. Click for larger versions The height adjustment range is very good. Above: Rotated view of the screen Above: Rotated view of the screen. Click for larger version The rotation function to switch between landscape and portrait is available but can be a little stiff to use.

Good panel uniformity from our sample may vary Dynamic contrast ratio does not work in practice Very good pixel responsiveness for gaming Black depth and contrast ratio not as good as we'd hoped. If you have enjoyed this review and found it useful, please consider making a small donation to the site. Above: Dell UHM. Your browser does not support inline frames or is currently configured not to display inline frames.

Specifications and Features The following table gives detailed information about the specs of the screen: Monitor Specifications. Colour Depth. Aspect Ratio. Colour Gamut. Panel Coating. Anti-glare 3H matte. Pixel Pitch. Response Time. Design colour. Matte black bezel and stand. Silver version also available with silver bezel and black stand. The Dell UltraSharp UHM monitor offers a wide range of customizable features to optimize your viewing experience for your comfort. Adjust for optimum height: Maximize your viewing experience by adjusting the UHM to your desired height with its improved height adjustment range of mm 5.

Every perspective matters: Choose portrait or landscape orientation on this aspect ratio monitor. Customize your settings: Change your energy usage settings and text brightness with the touch of a button. Make colors cooler or warmer with the easy-to-use color temperature slider. This eco-conscious design shines bright. You can even monitor your energy usage with a quick glance at the on-screen display.

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