Heat-resistant diffusion fabric that reduces light by 0.5–1 stop, softening shadows with subtle texture while maintaining directional quality.
Technical Details
Professional nets are made of heat-resistant materials such as fiberglass or special synthetic fibers that can withstand temperatures up to 200°C. A single net reduces light by approximately 0.5 stops, a double net by 1 stop. The mesh structure creates characteristic soft shadows with a slight texture. Nets are manufactured in standard sizes from 30x30cm to 120x120cm and are mounted in scrim holders (Scrim Jim) or directly in front of the lamp. Unlike silks or opal diffusers, the directional quality of the light is largely preserved.
History & Development
Nets originated in Hollywood in the 1930s as a cost-effective alternative to expensive diffusion filters. Originally, mosquito nets were actually used, stretched in front of Fresnel lenses. In the 1950s, Mole-Richardson developed the first professional scrim sets with standardized mesh sizes. The introduction of heat-resistant synthetic fibers in the 1970s enabled their use in front of HMI lamps with higher operating temperatures.
Practical Application in Film
Nets are primarily used for close-ups and medium shots to soften hard shadows without completely diffusing the light. For exterior shots, large nets are stretched over butterfly frames to modulate sunlight. Roger Deakins used large-scale nets in "Blade Runner 2049" to diffuse the LED panels for interior scenes. Nets are particularly suitable for eye light, as they make catchlights softer but not completely diffuse.
Comparison & Alternatives
Silk diffusers produce more uniform, softer light but reduce more light. Grid cloth has finer mesh and less texture in the shadows. Modern LED panels with integrated diffusers are partially replacing the net-lamp combination, but cannot reproduce the specific shadow characteristics of nets. Nets are problematic in windy conditions; frost filters or opal are preferred here.