Projector selection: differences between contrast and saturation

[Celine2020]

Contrast refers to the ratio of the highest brightness to the lowest brightness. When the image contrast is higher, it means that the difference between light and dark is more obvious; saturation refers to the pure degree of color, the more pure the saturation is, the higher the saturation. For example, pure blue, pure red, and pure green belong to high saturation, while gray blue, rose red, and grass green belong to low saturation, so the higher the saturation of the image, the brighter the image.

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What is the difference between contrast and saturation ?

Contrast and saturation have no small differences in the subject, characteristics and operations, the following will explain in detail:

1. main difference

• contrast: refers to the ratio of the highest brightness and the lowest brightness. When the image contrast is higher, then the difference between light and dark is more obvious.
• Saturation: refers to the purity of the color. When the saturation of the image is higher, then the image is more vivid.

2. Differences in features

• Contrast: The larger the range of image color difference, the greater the contrast, otherwise, the smaller the contrast. When the contrast ratio reaches 120: 1, it can easily display vivid and rich colors; and when the contrast ratio reaches 300: 1, it can support all levels of colors.
• Saturation: Saturation depends on the ratio of color components and achromatic components in the color. The greater the color component, the greater the saturation; the larger the achromatic component, the smaller the saturation.

3. Differences in function

• Contrast: The greater the contrast, the clearer and more eye-catching the image, and the more vivid the colors; otherwise, the entire picture will be gray. High contrast is very helpful to the clarity, detail performance and gray level of the image.
• Saturation: Chromaticity is related to the intensity of the photometric line and the intensity distribution at different wavelengths. The highest chromaticity is generally achieved by a single wavelength of strong light. In the case of unchanged wavelength distribution, the weaker the light intensity, the lower the chromaticity.