We understand that some customers have concerns about the contrast of Cosmos 4K SE. In this article, we hope to explain in detail our considerations around contrast design and how we optimize image quality.

1. Balancing Gamma Value and Contrast

Adjusting contrast and gamma values simultaneously can achieve the ideal visual effect in image processing. For example, adjusting the gamma value first to correct overall brightness, then fine-tuning the contrast to enhance details. It's important to be mindful that adjusting contrast and gamma simultaneously can sometimes lead to overexposed or underexposed images, or even result in loss of detail. Therefore, when adjusting the image, the roles and effects of both need to be considered. Overemphasizing contrast alone may lead to poorer image quality and suboptimal visual effects.

2. Balancing Brightness and Contrast

Brightness (measured in lumens) refers to the intensity of light emitted by a projector. High brightness ensures that a projector performs well even in well-lit environments, but maintaining high contrast at the same time is a challenge. Excessive brightness may prevent black areas from appearing deep enough, affecting the display of details in darker scenes.

Cosmos 4K SE boasts a brightness of 1,800 lumens, which is a significant advantage in the market. Unlike some competitors that sacrifice brightness to enhance contrast, our projector maintains high brightness while still delivering exceptional contrast and detailed image performance.

3. Ambient Light Adaptation

To further enhance image quality, we've introduced an Ambient Light Adaptation function in Cosmos 4K SE. This feature automatically recognizes the brightness distribution and contrast of the content being played and dynamically adjusts the gamma curve to enhance details in both bright and dark areas.

• Dark Scenes: The projector automatically boosts the brightness of darker areas, making shadows more pronounced.

• Bright Scenes: The projector automatically adjusts the brightness of highlights to make details clearer.

• Mixed Scenes: In scenes with alternating light and dark areas, the projector dynamically adjusts the gamma curve to ensure overall image balance and detailed performance.

4. Choose the Right Screen

• Screen Size: Select the screen size based on the distance between your projector's placement and the screen. Learn more about recommended screen sizes here: Cosmos-4K-SE-Recommended-Ambient-Brightness-and-Screen-Size

• Screen Material: Consider choosing a medium to long throw PVC ambient light-rejecting screen with a gain of around 1.2. This type of screen enhances image contrast and brightness, delivering clearer and more vivid visuals.

• Screen Type: Decide on the screen type based on your personal needs and whether you require mobility. If you won't be moving the screen frequently, such as in a bedroom setup, you might opt for a fixed frame screen or an electric-tensioned screen.

Overall, Cosmos 4K SE offers significant advantages in brightness, contrast, and detail. With a high brightness of 1800 lumens, it provides clear and vivid images in a variety of environments. By intelligently adjusting the gamma curve and utilizing ambient light adaptive functions, we achieve the optimal balance of dark and bright details even in well-lit spaces.