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Rosco Roscolux Cyc Silk Light Diffusing Gel Sheet — main product image
Rosco

Rosco Roscolux Cyc Silk Light Diffusing Gel Sheet

Professional-grade diffusion gel sheet that transforms harsh light into soft, even illumination for cycloramas and backdrops.

$10.00*$12.00Save 16%
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Rosco Roscolux Cyc Silk is a specialized light diffusion gel sheet designed to create soft, uniform washes of light across cycloramas, backdrops, and large set surfaces. Measuring 20 x 24 inches in the standard gel frame size, it combines a secondary color element with Rosco's 104 Tough Silk diffusion to deliver a 32% light transmission rate. This level of diffusion effectively eliminates hot spots and harsh edges from lighting fixtures, producing the kind of smooth, gradual illumination that is essential for professional video production, photography, and stage lighting.

Constructed from high-quality, heat-resistant material, Cyc Silk is built to withstand the sustained temperatures generated by continuous studio lights without warping, melting, or discoloring prematurely. Its color-neutral characteristics ensure that your white balance and color grading remain consistent, which is especially important when lighting green screens or white cyc walls. The sheet can be easily cut to fit smaller fixtures, making it a versatile addition to any lighting kit. Whether you are lighting a broadcast studio, a film set, or a photography backdrop, this gel provides controlled, professional-quality diffusion at a modest cost per sheet.

Key Features

SMOOTH, EVEN LIGHT - Roscolux Cyc Silk provides exceptional diffusion, transforming harsh light into a soft, flattering glow, ideal for professional photography and videography.

OPTIMIZED LIGHT QUALITY - Achieve true-to-life colors with this diffusion material, engineered to maintain color accuracy and prevent unwanted shifts in your lighting setup.

DURABLE AND RELIABLE - Crafted from high-quality materials, this 20x24" sheet withstands demanding conditions, ensuring long-lasting performance in studio and on-location shoots.

VERSATILE LIGHT CONTROL - Easily modify and soften light sources to create the perfect ambiance, reducing harsh shadows and highlights for a polished, professional look every time.

HEAT RESISTANT DESIGN - Roscolux Cyc Silk is designed to withstand heat from studio lights, providing a safe and reliable diffusion solution for continuous use without degradation.

Specifications

Brand
Rosco
Product
Roscolux Cyc Silk
Sheet Size
20 x 24 inches
Transmission
32%
Type
Light diffusion gel
Material
Roscolux diffusion media

Pros & Cons

👍 Pros

  • Provides smooth, even diffusion that eliminates hot spots on cycloramas and backdrops.
  • Heat-resistant material holds up under continuous studio lighting without warping or degrading quickly.
  • Standard 20x24-inch sheet fits most professional gel frames and can be cut down for smaller fixtures.
  • Maintains color accuracy without introducing unwanted color shifts.
  • At 32% transmission, it offers a strong diffusion effect while still passing enough light for practical use.

👎 Cons

  • Single sheet means you will need to purchase multiples if you are diffusing several fixtures or need replacements.
  • 32% transmission blocks a significant amount of light, which may require you to increase fixture output to compensate.
  • Like all gel material, it will eventually degrade from prolonged heat exposure and need to be replaced.
  • Only available in one size, so larger fixtures or custom rigs require multiple sheets or alternative solutions.

Frequently Asked Questions

The sheet measures 20 x 24 inches, which is the standard gel frame size for most professional lighting fixtures.
Cyc Silk has a transmission rate of 32%, providing significant diffusion that softens and spreads light while still delivering usable intensity on your subject or backdrop.
Yes. The sheet can be easily trimmed with scissors or a utility knife to fit any gel frame or fixture holder smaller than 20x24 inches.
It is engineered to maintain color accuracy, so you can expect minimal color shift when used with properly balanced light sources.
Roscolux Cyc Silk is designed to withstand the heat generated by studio lights, but always follow the manufacturer's recommended safe operating distances for your specific fixtures.

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