Page 4 - Display Performance Tests
Monitor reviews are conducted and tested in methods that require consideration of multiple aspects. This includes items like response time, latency, color accuracy, and more. This requires quite a bit of equipment specialized to obtain results regarding all of these different aspects. Because many cannot afford such equipment to obtain results regarding these aspects, articles covering monitors can have less than adequate and acceptable information or simply do not exist. As this is a product report -- not a review -- what we are doing is an examination of the monitor in its hardware. What we can do for you is some minor testing with the results we can present to you and let other reputable review sites with professional equipment show you more test results.
All of the data were collected with a Datacolor Spyder5PRO using DisplayCAL 3.8.9.3. Photos were captured using a Canon EOS 80D with a Canon EF 24-105mm f/4L IS USM lens mounted.
Gamut Coverage
Before calibration, the Yeyian Sigurd Series 2503 was a bit off with its color, as there was a notable color shift once the profile was applied. Unfortunately, this means the factory calibration was not as accurate. After calibrating the Yeyian Sigurd Series 2503 with DisplayCAL, we were provided the above graph, which displays the gamut coverage in reference to the sRGB color profile. According to the tests, the Yeyian Sigurd Series 2503 has a 90.71% sRGB, 65.26% DCI-P3, and 63.03% Adobe RGB color profile coverage. By comparison, most color-accurate monitors have a closer coverage of 99% sRGB and at least 70% Adobe RGB, which shows the Sigurd Series 2503 may not necessarily be the best option for color-sensitive work like photo or video editing. DisplayCAL also provides a more detailed measurement report, and generally all of the color values were decently accurate with a relatively low maximum delta E after calibration.
In addition, from DisplayCAL's generated report, we also see the Yeyian Sigurd Series 2503 has a contrast ratio of 2575.4:1, which is pretty good. As the Sigurd Series 2503 uses a curved VA panel, it is no surprise the contrast ratio is higher than that of a typical IPS panel. For some reference, OLED panels technically have the best contrast ratio, as they can emit perfect black pixels. VA panels have the next best contrast ratios, typically above 2500:1, as you can see today. Next are IPS panels with a typical range of 700 to 1500. Finally, TN panels usually have the worst contrast ratios with a typical range of 600 to 1200.
Viewing Angles
From the images above, you can see three different angles, with the first one being directly straight on, the next from the left side, and finally viewing from above the monitor. You can see how the different viewing angles makes for a slight difference on what the images look like, especially with the whites and grays. Directly head on, you can see a typical white to gray image. However, the color shifts a bit more to a sepia-like tone, especially on the farther edge, when viewed from the left side. Finally, viewing from above, you can see a bit of a tint shift, although it is not as extreme as when viewed horizontally off-axis.
Uniformity
When testing for uniformity, our first test is the black uniformity check. This checks for backlight bleeding, which is more common with IPS panels, although it also is seen on any LED-backlit panel. This photo was taken with a F-stop of 4.0, shutter speed of 1 second, and ISO at 200 to as accurately represent what you might see when viewing this monitor in pitch-black settings. The curved VA panel on the Yeyian Sigurd Series 2503 has a slight bit of flashlighting near the edges of the monitor, making a Batman-like logo, as you can see the glow of the backlight in specific areas near the edges of the monitor. One thing I should note is the extra cross-pattern reflected on the monitor is just a reflection from the camera lens and is not in reality what is displayed on the screen.
When we look at the DisplayCAL tests, we can see the uniformity across the screen for its color and luminance. This is tested by dividing up the monitor into a 5x5 square and running tests in each of the sectioned off areas and comparing them with the middle of the screen. The Yeyian Sigurd Series 2503 suffered in the delta E comparisons of color difference with large variances at the edges of the screen and more predominantly at the top edge. This was primarily color difference, although there was one section that also had a relatively large contrast deviation too. As for the delta C comparisons of average luminance, you can see we have a generally uniform display, but there is a bit of a drop on the top right corner and continues down the right side. The rest of the areas are within the acceptable 15% difference. Once again, the top edge also has a slightly larger deviance on average, but deviance is typical for more consumer-grade monitors.
Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware
3. OSD and Test System
4. Display Performance Tests
5. Conclusion
