Galaxy S6 and Galaxy S6 Edge OLED Display Technology Shoot-Out
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The slider controls allow the White Point Color Temperature to range from 6, K, which is close to the Standard D65 White, up to 8, K, which has a strong bluish tint that some people like.
- Comparison with LCDs and the iPhone 6 and 6 Plus
So with the Galaxy S9 you can set the Color of White that you prefer. This Figure shows the measured decrease in two Color Gamuts with increasing Ambient Light, from 0 lux, which is perfectly dark, up through 2, lux, which corresponds to typical outdoor daylight in shade.
This loss of color saturation and wash out in Ambient Light is well known to all display users. The way to improve the display color accuracy and performance in Ambient Light is to start with a larger Color Gamut, like the Adaptive Display screen mode, which is shown on the right in this Figure compared to the Basic screen mode on the left.
So the Adaptive Display screen mode provides more accurate on-screen colors in moderate to high Ambient Lighting than the other calibrated Screen Modes, which are designed and calibrated for Low Ambient Light. Applying Dynamic Color Management based on the current Ambient Light lux level in the future will able to further improve color accuracy over a wide range of Ambient Light levels, which we discuss further in the Conclusion. To be usable in high ambient light a display needs a dual combination of high Screen Brightness and low Screen Reflectance — the Galaxy S9 has both.
This is extremely important for screen readability, picture quality, and color accuracy in ambient light. See the Screen Brightness section for the measurements and details. The measured Galaxy S9 Screen Reflectance is 4. Our Contrast Rating for High Ambient Light quantitatively measures screen visibility and image contrast under bright Ambient Lighting — the higher the better. As a result of its high Brightness and low Reflectance, the Galaxy S9 has a Contrast Rating for High Ambient Light that ranges from 83 toamong the very highest that we have ever measured for a Smartphone.
See the Screen Reflectance section for the measurements and details. High Screen Brightness is only needed for High Ambient Light, so turning Automatic Brightness On will provide better high ambient light screen visibility and also longer battery running time. The Galaxy S9 can play the latest streamed mobile HDR videos, and its built-in video processor also allows it to provide an Expanded Dynamic Range for standard video content that produces an HDR-like effect.
When Automatic Brightness is turned On, the display Brightness is adjusted based on this single measured value. But that is only part of the story because the phone is often in the shadow of your head, so the front ambient light level is often reduced there. However, your eyes are generally more adapted to the surrounding ambient light level that is behind and around the phone, which needs to be taken into account in setting the proper screen Brightness, particularly with the most common back lighting situations that exist when holding the phone.
The Galaxy S9 Automatic Brightness Control has also been enhanced to provide improved response and transition times with changing ambient light levels to give your eyes the proper amount of time to adjust to the new levels.
The curved Edge screen provides an important User Interface enhancement for Smartphones that we describe below. Our detailed series of DisplayMate Lab tests that are listed below show that there are many significant display performance improvements in the new Galaxy S6 models, including higher resolution, higher absolute color accuracy, better calibration, higher peak brightness, better screen visibility and readability in high ambient light, and higher display power efficiency, resulting in a number of new performance records for Smartphone displays.
Samsung provided DisplayMate Technologies with early pre-release production units of both the Galaxy S6 and the Galaxy S6 Edge so that we could perform our well known independent, objective and comprehensive scientific Lab tests with extensive measurements and analysis, explaining in-depth the display performance results for consumers, and also as a display technology guide for reviewers and journalists.
This article will focus primarily on testing the Galaxy S6, but we have also included a section with some test results for the curved screen Galaxy S6 Edge. We take display quality very seriously and provide in-depth objective analysis based on detailed laboratory tests and measurements and extensive viewing tests with both test patterns, test images and test photos.
Results Highlights In this Results section we provide Highlights of the comprehensive DisplayMate Lab tests and measurements and extensive visual comparisons using test photos, test images, and test patterns that are covered in the advanced sections.
With the Galaxy S6 there are many significant improvements over the Galaxy S5 that we tested a year ago, but also over the Galaxy Note 4 that we tested 6 months ago. The most impressive improvements for the Galaxy S6 are in the pixels per inch and resolution, the Absolute Color Accuracy, Peak Brightness, Contrast and screen readability in High Ambient Light, and in display Power Efficiency, which we discuss in turn below.
Some of the Galaxy S9 Display Highlights
The Galaxy S6 provides a major resolution enhancement with a Quad HD x pixel display, the same as the 5. This provides lots of image detail — it can display four complete HD x images at once. For Smartphones they include a closer match to digital photo resolutions, the ability to display Full HD x images with an additional 1. So, when you are looking at an image with very finely detailed graphics and small text, most people with reasonably good vision will be able to make out and take advantage of the extra sharpness and image detail if they take the time to do so.
See our Innovative Displays and Display Technology article for more details. Multiple Screen Modes and Color Management Most Smartphones and Tablets only provide a single fixed factory display Color Gamut and color calibration, with no way for the user to alter it based on personal preferences, running applications, or Ambient Lighting levels. A very important capability provided by the OLED Galaxy S and Galaxy Note Smartphones and the Galaxy Tab S Tablets is the implementation of Color Management that provides a number of Screen Modes, each with different Color Gamuts and levels of user selectable color saturation and display calibration based on user and application preferences.
Color Management with multiple and varying Color Gamuts are a very useful and important state-of-the-art capability that all displays will need to provide in the future.
The Galaxy models are the first to have this capability. The Galaxy S6 has four user selectable Screen Modes: See this Figure for the Color Gamuts of the different tested Screen Modes and the Colors and Intensities section for measurements and details. We discuss each of the tested Screen Modes next… Adaptive Display Mode with a Wide Color Gamut The Adaptive Display screen mode provides real-time adaptive processing to dynamically adjust images and videos — for some applications it will vary the White Point, Color Gamut, and Color Saturation based on the image content and the color of the surrounding ambient lighting measured by the Ambient Light Sensor which measures color in addition to brightness.
Some people like the extra saturated vibrant colors, plus it is useful for special applications, and particularly for viewing the display in medium to high levels of Ambient Light, because it offsets some of the reflected light glare that washes out the on-screen image colors. Use Display Settings to switch to the three other available Screen Modes. The AMOLED Photo screen mode on the Galaxy S6 provides a very accurate calibration to the Adobe RGB standard, which is rarely available in consumers displays, and is very useful for high-end digital photography and other advanced imaging applications.
There are very few consumer displays that can accurately reproduce Adobe RGB, so this is a significant plus for serious photography enthusiasts.
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Even better, the Absolute Color Accuracy for the Basic screen mode is an impressive 1. It is visually indistinguishable from perfect, and very likely considerably better than your living room TV or any display that you own. Use the Basic screen mode for the best color and image accuracy, which is especially important when viewing photos from family and friends because you often know exactly what they actually should look likefor some TV shows, movies, and sporting events with image content and colors that you are familiar with, and also for viewing online merchandise, so you have a very good idea of exactly what colors you are buying and are less likely to return them.
Screen Brightness and Performance in High Ambient Lighting Mobile displays are often used under relatively bright ambient lighting, which washes out the image colors and contrast, reducing picture quality and making it harder to view or read the screen. To be usable in high ambient lighting a display needs a dual combination of high screen Brightness and low screen Reflectance — the Galaxy S6 has both.