Rosco Cinegel Half Blue (1/2 CTB), 48"x25' Roll of Color Correction Lighting Filter

SKU: RO3204R48 MFR: 101032044825
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Key Features

  • Achieve accurate color correction with this Rosco 1/2 CTB Cinegel lighting filter roll.
  • Easily balance warm light sources using this 48" x 25' color correction gel roll.
  • Durable Cinegel ensures consistent light transmission & performance on set, every time.
  • Cut & shape this versatile lighting filter for custom light balancing in photography.
  • Control color temperature; use the Rosco 1/2 Blue gel to cool down your scene's lighting.
  • Minimize unwanted color casts; get professional results with this heat-resistant filter.
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Temporarily On Backorder?Expected Availability: 10/2025
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Rosco Cinegel Half Blue (1/2 CTB), 48"x25' Roll Filter Specifications

General

General

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  • Filter Type

    Color Correction Filter

  • Roll Size

    48" x 25'

  • Format

    Rolls

  • Color/Effect

    1/2 Blue

  • Shape

    Roll

Physical Details

Jump to...
  • Dimensions

    W: 4 x H: 25 / W: 1.2 x H: 7.6m

  • UPC Code

    192223044715

About Rosco Cinegel Half Blue (1/2 CTB), 48"x25' Roll Filter

When precision color correction is paramount in your film and video production, the Rosco Cinegel Half Blue (1/2 CTB) lighting filter stands out as an essential tool for professionals. This high-quality, 48"x25' roll of color correction material is expertly crafted to convert 3200K light sources to a cooler 4100K, effectively compensating for varying daylight conditions, voltage reductions, or to rejuvenate aging HMI lamps and yellowed soft lights.

The Cinegel Half Blue filter is part of an extensive range of blue filters designed to elevate color temperatures to match or complement your creative vision. While it is commonly applied to tungsten-halogen sources to harmonize with natural daylight, its versatility extends to a wide array of technical and aesthetic applications, allowing for nuanced adjustments to the lighting in any scene.

Constructed with a deep-dyed base, this filter ensures heat stability and maintains superior color transmission, with a mired shift of -68 and 52% transmission, resulting in a light loss of just -0.9 stops. The robust material is engineered to withstand the rigors of professional use, ensuring consistent performance throughout your production.

Whether you're looking to subtly adjust the ambiance of a scene or correct color temperatures for technical accuracy, the Rosco Cinegel Half Blue (1/2 CTB) filter provides the reliability and quality that filmmakers and videographers trust. Its generous dimensions of 48 inches by 25 feet (122 cm x 7.6 m) offer ample material for multiple setups or large-scale projects, making it a go-to choice for industry professionals seeking to achieve the perfect shot.

Rosco Cinegel Half Blue (1/2 CTB), 48"x25' Roll Filter Features

  • High-quality Rosco Cinegel Half Blue (1/2 CTB) lighting filter for professional color correction
  • Converts 3200K light sources to a cooler 4100K, compensating for varying daylight conditions
  • Part of a range of blue filters designed to elevate color temperatures and offer color correction possibilities
  • Deep-dyed base ensures heat stability and superior color transmission
  • Mired shift of -68 with 52% transmission, resulting in a light loss of -0.9 stops
  • Generous dimensions of 48 inches by 25 feet provide ample material for multiple setups or large-scale projects

Key Features

  • Achieve accurate color correction with this Rosco 1/2 CTB Cinegel lighting filter roll.
  • Easily balance warm light sources using this 48" x 25' color correction gel roll.
  • Durable Cinegel ensures consistent light transmission & performance on set, every time.
  • Cut & shape this versatile lighting filter for custom light balancing in photography.
  • Control color temperature; use the Rosco 1/2 Blue gel to cool down your scene's lighting.
  • Minimize unwanted color casts; get professional results with this heat-resistant filter.