Frame

Technical Details

Modern frames are made of anodized aluminum, weighing between 0.8 kg (30x30 cm) and 12 kg (366x366 cm). The frame profiles typically have a cross-section of 25x25 mm for smaller sizes and up to 50x50 mm for larger formats. Fabrics include diffusion materials such as 250 Opal (1 stop light loss), 216 White Diffusion (1/2 stop), or nets in various densities from Single Net (1/3 stop) to Triple Net (1 stop). Black flags (Solid) block light completely, while silks are made of white ripstop nylon and allow wind to pass through.

History & Development

The first frames originated in Hollywood in the 1920s as simple wooden frames for black molton flags. In 1934, Matthews Studio Equipment introduced standardized metal frames. The breakthrough came in 1960 with Lee Filters' first diffusion material, "Frost," which was specifically developed for frames. Since the 1990s, foldable butterfly frames with quick-release fasteners have dominated the market.

Practical Use in Film

In "Blade Runner 2049" (2017), Roger Deakins used 6'x8' frames with 1/4 CTS diffusion for interior scenes to break up the harsh LED light from practicals. For exterior shots, 12'x12' frames serve as overhead diffusion against direct sunlight. The typical workflow involves positioning with C-stands or combo stands at a distance of 1-3 meters from the light source. Frames allow for precise light shaping without color temperature change, but require additional crew members and are susceptible to wind.

Comparison & Alternatives

Frames differ from softboxes in their flexibility – the fabric material is interchangeable. Unlike fixed diffusers like Chimera or Photoflex, frames can be positioned as needed. Modern LED panels with built-in diffusion are increasingly replacing smaller frames, while large overheads are being competed with by stretch diffusion systems like Foldaway or Scrim-Jim. Frames remain the standard for daylight exterior shots and anywhere maximum control over light quality is required.