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Even Higher Automatic Peak Brightness
On the Galaxy S8 the Maximum Screen Brightness can go much higher when Automatic Brightness is turned On, so that users can’t permanently park the Manual Brightness slider to very high values, which would run down the battery quickly. 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.
When Automatic Brightness is turned On, the Galaxy S8 produces up to a very impressive 1,020 cd/m2 (nits) in High Ambient Light, where high Brightness is really needed – which is the brightest Smartphone display that we have ever measured, tied with the Galaxy Note7 and 19% Brighter than the Galaxy S7. As a result of its very high Automatic Brightness and low Reflectance, the Galaxy S8 has a Contrast Rating for High Ambient Light that ranges from 128 to 227, also the highest that we have ever measured for a Smartphone display. See the
Brightness and Contrast, the
High Ambient Lightand the
Screen Reflections sections for the measurements and details. The much higher Peak Brightness of over 1,000 nits is also used to provide High Dynamic Range HDR, which we discuss next...
article that described “How Automatic Brightness Should Work.” The Galaxy S8 is the first Smartphone (along with the Galaxy Note7) to have a second Ambient Light Sensor on the back that also measures the surrounding ambient light behind the phone and then uses both measured values to adjust the display Brightness based on the front and back lighting. The Galaxy S8 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.
article that described “How Automatic Brightness Should Work.” The Galaxy S8 and Galaxy S7 are the first Smartphones, Tablets, or TVs to do Automatic Brightness correctly.
When Automatic Brightness is turned On (under Display Settings), if you adjust the Brightness Slider, the Galaxy S8 will remember your setting along with the current Ambient Light level that is measured by its Ambient Light Sensors (ALS). From then on the Galaxy S8 will automatically adjust the screen Brightness by measuring the current ambient light level and then adjusting the display Brightness based on the settings that you have previously made, so you’ll get a customized screen Brightness setting that you’ve previously trained it to produce for the current level of ambient light – and you can continue to tweak and adjust it as needed. Other smartphones operate using the antiquated opposite approach that works backwards and poorly, which often results in users disabling Automatic Brightness.