Heat-resistant diffusion fabric (1/4 to 3/4 stop) that reduces light by 0.3–0.6 stops with soft shadow definition for portraiture.
Technical Details
China Silk is offered in standard strengths of 1/4, 1/2, and 3/4, with the numbers indicating the degree of light reduction. The material is heat-resistant up to 150°C and available in roll widths from 1.20m to 6.10m. The fabric can be stretched in frames and hung directly over light fixtures. Special variants like "Quarter Silk" (0.3 stop reduction) or "Half Silk" (0.6 stop reduction) allow for precise light control. Transmission ranges from 30-70% depending on density, with the color temperature remaining almost unchanged.
History & Development
The term established itself in Hollywood in the 1960s when real silk fabrics were replaced by synthetic materials. Originally, lighting technicians actually used Chinese silk for light diffusion, but it quickly burned with hot tungsten lights. In 1968, Mole-Richardson developed the first heat-resistant synthetic fiber variants specifically for the film industry. With the introduction of LED panels from 2010 onwards, China Silk gained new significance, as the lower heat development also enabled more sensitive diffusion materials.
Practical Use in Film
China Silk is primarily used for portrait shots and close-ups to eliminate hard shadows and soften skin textures. Cinematographers often stretch the fabric in 4x4-foot or 6x6-foot frames between the light source and the subject. In "Blade Runner 2049" (2017), Roger Deakins systematically used China Silk for interior scenes to diffuse the harsh LED panels. The fabric is particularly suitable for available light situations where window light needs to be softened. Disadvantages include susceptibility to wind in exterior shots and limited durability under intense UV radiation.
Comparison & Alternatives
Unlike Grid Cloth (1-2 stop reduction) or Opal Frost (strong diffusion), China Silk offers the least light reduction with maximum softening. Modern LED softboxes with built-in diffusers are increasingly replacing external China Silk setups. Bounce lighting off white walls or ceilings produces similar results but requires more light output. For direct sunlight, professionals tend to use Grifflyne or Ultrabounce, as China Silk is too transparent.