Overview
In the grip department, an "18x24 Flag" refers to a standardized light control tool from the family of flags, nets, and silks. The designation "18x24" refers to the usable fabric area in inches (approx. 46 × 61 cm); "Flag" denotes the solid, opaque variant with black fabric. It is not a light source or a manufacturer, but passive grip equipment used on set to block light, create shadows, and prevent lens flares.
The 18x24 format is one of the most common standard sizes; other usual dimensions within the same product line are 24×36, 36×48, and 4'×4'. Manufacturers offering this format include Matthews Studio Equipment (item number 169059), American Grip, Modern Studio Equipment, and Advantage Gripware.
Construction and Technical Specifications
An 18x24 flag consists of a rectangular metal frame (typically steel) that stretches the black, opaque fabric. Attached to the frame is a stud or pin with a 3/8" diameter, which is used to clamp the flag into the grip head (knuckle) of a C-stand or grip arm, allowing for free positioning.
| Feature | Specification |
|---|
| Fabric Area | approx. 18" × 24" (≈ 46 × 61 cm) |
| Shape | rectangular |
| Fabric | black, opaque (solid) |
| Frame | metal (usually steel) |
| Stud/Pin | 3/8" diameter |
A variation is the "Floppy," which features additional, foldable fabric to enlarge the effective area when needed.
Distinction within the Product Line
Within the same size grid, but with different functions, exist:
- Net (Scrim): net-like fabric that only reduces light rather than blocking it. Convention: green edge = Single (reduction by approx. half a stop), red edge = Double (approx. one stop).
- Silk: diffuses light instead of blocking it.
- Cutter: long, narrow solid flags for precisely "cutting" light edges.
On-Set Usage
The 18x24 flag is mounted on a C-stand and positioned using a grip arm and grip head. Typical tasks include: keeping light away from areas of the image or the background, catching spill light from adjacent sources, creating hard light edges on walls, and shading the lens against flares. Due to its compact size, it is particularly suitable for targeted, small-area cuts close to the subject or camera; multiple flags can be combined to form a "box" for tightly controlling a source.