You can adjust this setting to your liking if you don't like the target. Gamma Setting: Some monitors have different gamma settings, so we set it at the setting that should follow the sRGB target the most.We normally leave it at the default for the pre-calibration measurement but change it for the calibration. RGB Setting: With some monitors, you can change the individual values of the Red, Green, and Blue colors if you find that the colors are off.Most of the time, it's left at its default. Contrast setting: The contrast setting changes the level of the whites, which could help brighten an image.The settings in the pre-calibration box are meant as a reference for the settings used in the post-calibration box, so you can see how much was needed to change for an accurate image. Most of the settings are left at their default, but you can see if we change them. The accuracy isn't exactly measured right when we take it out of the box, but rather, we change a few settings. You can see that's the case with the monitor on the left below, while the one on the right displays colors nearly perfectly, and the color temperature, white balance, and gamut coverage on that monitor are also all nearly perfect. Having bad color accuracy also results in bad color temperature and oversaturated colors, as they're all connected. You can also see the dE of each individual color with the bars on the left side, like with the white balance. In the graphs below, the target value for each color is represented by the square within the sRGB color space, and the dot represents the color that the monitor actually displays. The final dE is the average of all inaccuracies at different points. We measure to see how accurately it displays these colors at a 75% stimulus at points of 20%, 40%, 60%, 80%, 95%, and 100% saturation for each color. The color dE is similar to the white balance dE, but instead of measuring shades of gray, it measures different colors within the sRGB color space. However, with the monitor on the left, it doesn't follow the target curve at all, as most scenes are too bright. You can see that with the monitor on the right as dark scenes are too bright, and bright scenes are too dark, but overall the gamma is still great. While some monitors can have a value of exactly 2.20, it doesn't mean they follow the target perfectly over the entire curve. The final value is an average over the entire gamma curve, and the ideal value is 2.20. The x-axis at the bottom is the shades from dark to bright. The gamma graph is easy to read as the yellow line represents the sRGB curve, and the gray line is the monitor's gamma. If it's below the target, it's too bright, and details will be overbrightened. If it's above the target, it's too dark, and you might not see details in those shadows. So that means if you're watching a video and there are shadows, you'll see those shadows as the creator intended. It's supposed to follow an sRGB target curve, and when followed properly, scenes are displayed at their proper brightness. Gamma is the brightness of an image within different shades. You'll notice that it struggles to properly display saturated blue, though, which is a common problem with LCD monitors. That isn't the case with the monitor on the right, which displays all colors nearly perfectly. The monitor on the left completely oversaturates its colors, and the overall accuracy is off as colors don't appear how they should. Although it's rare, some monitors also undersaturate colors, meaning it covers less of the color space than required.īelow you can see two examples of monitors with bad and incredible coverage. The ideal monitor has 100% coverage, while one that oversaturates its colors has a percentage higher than 100. We measure the sRGB gamut area coverage as a percentage. However, some monitors do this by oversaturating their colors past the limits, which can be distracting if you're working in the sRGB color space and want the most accurate monitor possible. It's one of the more basic color spaces and isn't nearly as wide as others, meaning it's easier to reach full coverage. The sRGB color space is the most common color space used in most web content, and it's the standard to which we measure the accuracy.
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