Photographic pattern slides for overhead projectors or beamers — cast moving shadows and textures onto set. Faster than rigging practical gobos, essential for window patterns, foliage, or architectural detail.
You need realistic window mullions on a wall quickly without building a complete window construction — this is exactly what Life Model Slides are for: we stretch them into a projector or overhead projector. The slide shows photographed or graphically generated patterns: blind lines, tree leaf shadows, grid structures, facade textures. The projected image casts moving shadows directly onto the set or into the actor's face. Within seconds, you have light modulation that would otherwise have cost hours of setup.
The practical advantage lies in flexibility and speed. Instead of rigging window frames or building complex shadow rigs, you slide a transparency into the projector, focus, and you're good to go. You can move the pattern in real-time, adjust the size, or even execute a slow pan during a long take — especially valuable for static wide shots where subtle background movement brings the image to life. For night scenes behind windows or office settings with a blind character, this saves considerable time and materials.
When using them, you need to pay attention to sharpness and contrast. Cheap overhead projectors cast muddy, low-contrast shadows — a high-quality projector with sufficient lumens and sharp focus provides more precise edges. The distance between the projector and the projection surface determines the size of the pattern; close up = small details, far away = large structures. In post-production, the lighting department often works with prepared slide catalogs — photographic nature shots (real branches, real facades) are more convincing than pure graphics.
Classic use: an interrogation scene with blind stripes across the face, or a daylight scene in an empty studio where you need authentic window reflections without real windows. Some studios maintain standardized slide collections — trees in the wind, water reflections, city lights — as quick grabs from the lighting kit. The system also works in reverse: as a shadow caster between light and object, to cut structures into the beam without building physical gobos.