The Intensity Scale (sometimes called the Gray Scale) not only controls the contrast within all displayed images but it also controls how the Red, Green and Blue primary colors mix to produce all of the on-screen colors. The steeper the Intensity Scale the greater the image contrast and the higher the saturation of displayed color mixtures. So if the Intensity Scale does not follow the Standard that is used in all consumer content then the colors and intensities will be wrong everywhere in all images.
In order to deliver accurate color and image contrast a display must closely match the Standard Intensity Scale. Figure 3 shows the measured Intensity Scales for the LD OLED TV and the Samsung LCD TV alongside the industry standard Gamma of 2.2, which is the straight black line. Note that the range of image brightness shown in the Figure is very large, down to less than 1 percent of the Peak Luminance.
The LG OLED TV has a more accurate Intensity Scale than the Samsung LCD TV.