Star filter producing six symmetrical rays from point light sources through three intersecting line pairs at 60° angles. Creates romantic or glamorous night-scene effects.
Definition
The 6-Point Star is a characteristic optical effect in cinematography where light sources are rendered as star-shaped rays with six symmetrical points. This effect is achieved by using special star filters in front of the camera lens, which consist of an optical glass with engraved, intersecting lines. The six rays are created by three pairs of lines arranged at 60-degree angles to each other.
The 6-point star is particularly frequently used to depict artificial light sources such as streetlights, car headlights, neon lights, or candle flames. It lends the image a romantic, fairytale-like, or glamorous atmosphere and is often employed in music videos, commercials, and feature films to create specific moods.
Practical Application
In practical application, the star filter is screwed directly onto the lens or inserted into a matte box system. The intensity of the effect depends on the aperture setting, the brightness of the light source, and the quality of the filter. If overused, the effect can appear kitschy, which is why subtle application is crucial. The 6-point star is particularly effective in night shots or in dim lighting conditions.
Technical Details
The filters are available in different strengths (2mm, 4mm, 6mm line thickness), with thinner lines producing more delicate stars and thicker lines producing more prominent stars. The length of the rays is proportional to the brightness of the light source and the focal length used.