Rosco R3840 Cinebounce – White/Black Reflective Fabric

Versatile Dual-Sided Fabric for Light Control and Bounce

The Rosco R3840 Cinebounce is a premium, dual-sided reflector fabric featuring bright matte white on one side for soft bounce, and deep matte black on the reverse for negative fill or light blocking. Designed for use in film, television, and photography, this durable, flexible material is a go-to tool for lighting professionals looking for reliable control over reflection and shadow.

Key Features

⚪ White Side – Soft Bounce
Delivers a clean, even, and diffuse light reflection — perfect for soft fill in portraits, interviews, product shoots, and more.

⚫ Black Side – Negative Fill / Light Block
Absorbs light to create contrast, reduce spill, or block unwanted ambient light. Ideal for shaping shadows or cutting reflections on set.

🧰 Durable & Flexible
Heavy-duty yet pliable enough to mount on frames, clamp to stands, sew into rags, or hang as flags. Built to withstand on-set handling and outdoor use.

🎥 Industry Standard for Grip & Lighting
Widely used in cinematography, commercial shoots, still photography, and stage productions for its versatility and ruggedness.

Technical Specifications

Product Code: R3840
Material: Matte white (bounce) / Matte black (block)
Finish: Non-glare, low-sheen on both sides
Dimensions: Roll Size 1.52 m x 6.1 m (60" x 20')
Weight: Medium-heavy (grip grade)

Applications

Bounce fill light with soft, neutral reflection
Negative fill for contrast control
Blocking or shaping natural or artificial light
Rigging on butterfly frames, flags, or custom lighting setups
Scenic masking or background shaping in theatre and studio

Note: Can be sewn, grommeted, or tensioned. Store rolled or flat to avoid creasing.

Rosco’s Academy Award® winning range of color, correction and diffusion filters. The Rosco Cinegel range includes over 200 tools for controlling light, including color corrections, diffusions, our patented CalColor System, The Storaro Selection and Cinelux.

Size:

Sheet: 50cm x 60cm (20" x 24")
Roll: 122cm x 7.62m (48" x 25')
Extra-Wide Roll: 1.53m x 6.02m (60" x 20')

$279.00 AUD

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Size Extra Wide Roll

Quantity

Product Specs

Base:

Polyester (PET)

Gauge:

3.0 mil (.003" or 75 micron) nominal

Max Width:

48 in (1.2m)
60 in (1.5m) width available in some colors.

Click here for a full list of wide width rolls.

A select range of e-colour+ rolls feature edge marking. Click here for a full list of edge marked filter rolls.

Maximum Working Temp.:

Softening: 257°F (125° C)
Melting: 572°F (300° C)

Flame Retardant Rating:

BS3944 PART 1 1992

Compliance:

RoHS, REACH, Proposition 65

How Rosco Color Filters Work

Filters create color by subtracting certain wavelengths of color. Thus, a red filter absorbs blue and green, allowing only the red wavelengths to pass. The process is subtractive, not additive, so the light source must emit a full spectrum.

The Rosco swatchbook provides detailed information on the spectral energy curve of each filter. The curve describes the wavelengths of color transmitted through each filter. For example, Supergel 342 transmits approximately 40% of the violet and blue energy of the spectrum and 75% of the orange and red energy. It absorbs all energy in the yellow and green range.

Durability

The life of color filters depends on many variables: the color, the instrument and lamp used, the dimmer level a filter generally runs at, and the amount of time the light is running. For these reasons it is impossible to assign a "life" for each filter. However some basics knowledge and experience can help with estimates. Dark green and dark blue filters usually burn out the fastest because they absorb the most infrared energy. Absorbing the extra infrared energy causes the plastic to reach it's melting temperature faster. When darker filters are needed try choosing filters that transmit high amounts of the 700 nm range. You can find this information by looking at the Spectral Energy Distribution (S.E.D.) curve located in the swatchbook for each Supergel color filter. Filters than transmit high levels at 700 nm may also transmit high levels in the infrared range above 700 nm.(See the Supergel swatchbook for information on how to read S.E.D. curves.)

To prolong the life of a color filter, align your ellipsoidal lamp to a flat field focus. (Get rid of the hot spot.) You can increase the distance between the lamp and the filter by using a top hat or barn door. In extreme cases, try Rosco Heat Shield or Thermashield to prolong the life of your filters.

Never use a plastic filter directly in front of an open faced lamp. This will nearly always cause premature failure because the heat is trapped and it has nowhere to go except to the plastic filter. Always allow a suitable air gap.