Black grid-patterned diffusion material for soft light distribution. Reduces intensity by approximately 0.5 stops with gentle scattering.
Technical Details
Grid Cloth is typically manufactured in frame sizes ranging from 18x24 inches to 12x12 feet, with 4x4 and 6x6 feet being the most common formats. The ripstop nylon fabric has a yarn density of approximately 70 denier and a transmission of about 60-70%. The grid structure is created by thicker reinforcing threads every 5-8mm, which give the material its characteristic tear resistance. Variants available include Quarter Grid Cloth (less diffusion), Half Grid Cloth (medium diffusion), and Full Grid Cloth (strongest diffusion).
History & Development
Grid Cloth was developed in the 1970s by grip equipment manufacturers like Matthews Studio Equipment as an alternative to the heavy tissue paper diffusers of the classic Hollywood era. Its introduction coincided with the increasing use of HMI lights, which required precise light modification. In the 1990s, ultralightweight versions became established for location shoots. Modern LED technology has increased the demand for Grid Cloth again, as LEDs often exhibit point-source light characteristics.
Practical Application in Film
Cinematographers frequently use Grid Cloth as a flag in front of windows to soften harsh daylight without altering the natural direction of the light. In "Her" (2013), cinematographer Hoyte van Hoytema systematically used Grid Cloth to diffuse LED panels in interiors. The material is particularly suitable for transitional setups between day and night shots, as it can be quickly assembled and disassembled. A disadvantage is its limited wind resistance for exterior shoots and the visible grid structure in extreme backlight situations.
Comparison & Alternatives
Grid Cloth differs from Diffusion Silk due to its coarser structure and stronger light scattering, while Opal Frost produces a more uniform but cooler diffusion. Lee Filters Hamburg Frost or Rosco Tough Silk offer similar properties, but without the characteristic grid appearance. In LED setups, Grid Cloth competes with softboxes and digital light shaping, but remains relevant due to its flexibility and minimal space requirements.