Last Updated 3 months ago
Definition
A Cutter is a large, narrow light-control flag used by the grip department to precisely shape, block, or “cut” light. Cutters are designed to control specific portions of a beam without affecting the entire light source, making them ideal for fine adjustments in contrast, spill control, and beam shaping.
If a DP or gaffer wants to remove light from just one edge of a wall, face, or background, a cutter is often the fastest and cleanest solution.
What a Cutter Is
Cutters are part of the broader flag family (solids, nets, silks), but they differ in proportion and purpose.
Typical characteristics:
- Long, narrow rectangular shape
- Opaque black fabric stretched over a metal frame
- Mounted on a C-stand with a grip head and arm
- Designed for precision, not broad coverage
Common cutter sizes include:
- 18″ × 24″ (2×1)
- 24″ × 36″
- 12″ × 48″ (strip cutter)
- 24″ × 48″ (2×4 cutter)
The elongated shape allows grips to carve light surgically rather than bluntly.
What Cutters Are Used For
Spill Control
Blocking unwanted light from hitting walls, ceilings, floors, or set dressing without changing the main exposure.
Beam Shaping
Creating clean edges, slashes, or controlled falloff in hard or semi-hard light.
Lens Protection
Preventing flare by cutting light from striking the lens when flags or matte boxes aren’t enough.
Negative Fill
Placed close to talent to absorb bounced light and deepen shadows on one side of the face.
Reflections & Hot Spots
Cutting reflections in glass, cars, polished surfaces, or glossy props.
Cutter vs. Other Flags
- Cutter vs. Solid:
Solids block large areas; cutters block specific edges or slices of light. - Cutter vs. Net:
Nets reduce intensity; cutters remove light completely. - Cutter vs. Barn Doors:
Barn doors are attached to the fixture and offer coarse control. Cutters provide far more precision and flexibility.
In practice, cutters are often used in addition to barn doors.
Grip Best Practices
- Place cutters as close to the source as possible for a sharper edge
- Always sandbag—cutters catch wind easily
- Angle carefully to avoid creeping into frame
- Think in terms of subtracting light, not adding it
Why Cutters Matter
Lighting isn’t just about where light goes—it’s about where it doesn’t go. Cutters give filmmakers control over contrast, shape, and mood without moving lights or changing exposure. They’re a fundamental grip tool and a clear marker of professional lighting technique.
Related Terms
- Flag – General light-control tool
- Solid – Large opaque flag
- Negative Fill – Removing bounce light
- Barn Doors – Fixture-mounted light control