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Doposud jsem používal pro práci UltraSharp U2412M, který byl také vhodný pro tisk fotografií. Model UltraSharp U2520D má o něco vyšší rozlišení a je "širokoúhlejší", takže předpokládám lepší práci s fotografiemi a videi. dE colour accuracy – a wide range of colours are tested and the colour accuracy dE measured. We compare these produced colours to the sRGB reference space, and if applicable when measuring a wide gamut screen we also provide the accuracy relative to a specific wide gamut reference such as DCI-P3. An average dE and maximum dE is provided along with an overall screen rating. The lower the dE the better with differences of <1 being imperceptible (marked by the green area on the graph), and differences between 1 and 3 being small (yellow areas). Anything over dE 3 needs correcting and causes more obvious differences in appearance relative to what should be shown
Dell U2520D UltraSharp USB-C 25 Inch QHD (2560 x 1440
The greyscale accuracy was poor though, and as we said some of the shades looked a little green in colour. We had a greyscale average dE of 4.7 here which isn’t very good. For an average office user there is probably no major problem here, the screen still looks good visually. It is bright out of the box at the default 75% brightness setting (255 cd/m2 measured), so that will need to be turned down. We had a decent contrast ratio for an IPS panel of 980:1 by default too which was close to the spec.Dell claims color-gamut coverage of 99 percent of the sRGB color space, the standard color space used on the web and in many other applications, out of the box. The U2520D surpassed that, covering 99.9 percent of sRGB. Působivá čistota: Sledujte jemné detaily s rozlišením QHD (2 560 × 1 440) a vysokou hustotou obrazových bodů 117,5 ppi. Default setup was moderate overall. There was a reasonable gamma, being measured at 2.10 average overall and being a bit too low from our target of 2.2. This was lowest in the darker tones (2.07 average) which could lead to a little loss in shadow detail. The RGB balance wasn’t very good and some of the grey shades looked a little green in colour. You can see the green balance was relatively too high in the middle graph. There was a reasonable overall greyscale colour temp with 6241k measured, being a little too warm but nothing too severe. The white point was very accurate at 6527k though (0% deviance).
Dell U2520D | Documentation | Dell US Support for Dell U2520D | Documentation | Dell US
Gamut coverage – we provide measurements of the screens colour gamut relative to various reference spaces including sRGB, DCI-P3, Adobe RGB and Rec.2020. Coverage is shown in absolute numbers as well as relative, which helps identify where the coverage extends beyond a given reference space. A CIE-1976 chromaticity diagram (which provides improved accuracy compared with older CIE-1931 methods) is included which provides a visual representation of the monitors colour gamut as compared with sRGB, and if appropriate also relative to a wide gamut reference space such as DCI-P3. Výjimečné barvy: Získejte široké pokrytí barev díky 95% pokrytí prostoru DCI-P3 – zhruba o 25 % více než u sRGB – pro skutečnou reprodukci barev. Tento monitor nabízí také 99% pokrytí barevného prostoru sRGB a 99% pokrytí prostoru Rec. 709. If you’re looking for a compact but elite productivity monitor that displays color well, the U2520D is well worth your consideration. It costs less than the Lenovo P27u-10, and it features much better OSD navigation. It has a similar feature set but a smaller screen than the Editors’ Choice Dell 27 USB-C Monitor (P2720DC). They both have very good color accuracy, a full range of ergonomic features, and a generous port selection, plus both support automatic daisy chaining of a second monitor. Since 2004, I have worked on PCMag’s hardware team, covering at various times printers, scanners, projectors, storage, and monitors. I currently focus my testing efforts on 3D printers, pro and productivity displays, and drives and SSDs of all sorts. Over the years, I have reviewed iPad and iPhone science apps, plus the occasional camera, laptop, keyboard, and mouse. I've also written a host of articles about astronomy, space science, travel photography, and astrophotography for PCMag and its past and present sibling publications (among them, Mashable and ExtremeTech), as well as for the PCMag Digital Edition.
There are only two overdrive settings available in the menu via the ‘Response Time’ option. These are for ‘normal’ (8ms G2G spec from Dell) and ‘Fast’ (5ms G2G from Dell) modes. We tested both of these and it was immediately obvious that the ‘Fast’ mode was like many other aggressive overdrive settings in the market and not usable in practice. The ‘normal’ mode looked far better. IDC Whitepaper: “Optimizing Performance with Frequent Server Replacements for Enterprises” commissioned by Dell Technologies and Intel, March 2021. Results are based on interviews with 18 IT practitioners and decision makers at midsize and large enterprises and a web survey of 707 IT practitioners and decision makers at midsize and larger enterprises using Dell Technologies server solutions across 7 industries. See full whitepaper: https://www.delltechnologies.com/resources/en-us/asset/white-papers/products/servers/server-infrastructure-resiliency-enterprise-whitepaper.pdf
Dell U2722DE and U2722D review - TFTCentral Dell U2722DE and U2722D review - TFTCentral
Our servers are getting hit pretty hard right now. To continue shopping, enter the characters as they are shown Calibration and profiling can of course produce excellent results if you have a suitable calibration device and appropriate software. Our results are included above. You can see the recommended OSD settings above, and then further corrections are taken care of at the profile level. If you want you can also try our calibrated ICC profileout. Gaming Hard drive retention: Hard drive retention is not available on models with a soldered hard drive, including XPS 9315 2in1, Chromebooks or Venue tablets, except the Venue 11 Pro.Normal mode delivered pretty slow response times though, with a 10.4ms G2G average but thankfully very low levels of overshoot that were not visible in practice at all. Given the screen is only 60Hz, while these response times were slow for sure relative to modern gaming screens, they were still fast enough to keep up with the low 60fps frame rate. There’s no real problems with the response times here for what is an office and general use monitor. They can probably handle some light gaming if you wanted to, and are fine for multimedia and certainly for static office-type content of course. Built in KVM and RJ45 along with USB type-C hub (inc DP Alt mode and 90W power delivery) – DE model only
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