What does the filter look like?

The filter typically appears as a transparent or semi-transparent layer that can be applied over an image or video, altering its colors, brightness, or contrast. It may have adjustable settings to fine-tune its effects, such as intensity or hue. In digital applications, filters often come in preset styles, which users can select to achieve a specific aesthetic. Depending on the medium, it can also be represented as a physical object, like a lens or a screen, that modifies the light passing through it.