The recent launch from Samsung is Galaxy Note 8, and S8, and if we talk about S8, in addition to having a high resolution, the Samsung Galaxy S8 + screen is compatible with high dynamic range HDR technology. Specifically, the Galaxy S8 + is the first smartphone with the Mobile HDR Premium certification of the UHD Allliance, and is compatible with the standard HDR10 (although not with Dolby Vision). Now there are rumours that Samsung Galaxy S9 will have HDR11 standards.
If you are unfamiliar with HDR, it is a panel technology that allows you to display broader ranges of color, contrast and brightness than usual. This translates into support for new color spaces. HDR panels are designed to go beyond the standard sRGB / Rec. 709 color space, try to meet the DCI-P3 standard used in the film industry, and point to an even wider color space Rec. 2020, which Covers 76 percent of the visible spectrum. Already Samsung has taken it way further with S8, and we can’t even imagine another improvement that will come up with Samsung Galaxy S9.
No current panel is able to display full color space Rec. 2020, but they are usually around 60 percent, but many panels do come close to covering the entire DCI-P3 space. Next we will carry out a set of tests with the professional software CalMAN Ultimate and an X-Rite i1Display Pro colorimeter to know the quality of the screen of Samsung Galaxy S8+. First of all, it should be clarified that the Samsung Galaxy S8 + offers four color modes: Adaptive Display, AMOLED Cinema, Photo AMOLED and Basic. These four-color modes will remain same with the Samsung Galaxy S9.
Putting some light on these modes, by default, the active mode is Adaptive Display, which covers 139% of the sRGB gamut, which means it offers over-saturated colors. This excess of color produces images visually more striking but less true to reality. This means that if we tweak a picture on the phone, we may be disappointed when we see it later on another device. This mode has an important advantage and is very useful when we use the phone in full daylight because under the sun the colors lose strength. Samsung should work on the daylight issue, well it is not exactly an issue but further improvements will be welcome with the launch of Samsung Galaxy S9.
For all these reasons, in the Adaptive Display mode, the average error in color fidelity with respect to the gamut sRGB is quite improved, 7.3 dE (a value below 4 dE is considered excellent and above 9 is considered unacceptable), And the maximum error turns out to be also very high, 14.3 dE. This is due to the excess saturation of the colors we have discussed.