What phenomenon occurs with costumes or set elements that have contrasting stripes and delicate patterns?

The Moiré effect is a visual phenomenon that occurs when two patterns with fine detail, such as contrasting stripes or delicate patterns, overlap and create a third, often unintended, pattern. This occurs because the viewer's eyes perceive the interference between the two sets of lines or patterns, leading to a wavy or rippling appearance. This effect is particularly problematic in film and photography, as it can distract from the intended visual experience and create unwanted artifacts in the final image. Understanding the Moiré effect is essential for costume and set design, as it can influence how elements appear on camera, and designers must take care to avoid it by choosing patterns that do not interact in ways that would result in this visual issue.