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Rosco 3411 Rosco Sun 3/4 CTO Lighting Gel Sheet — main product image
Rosco

Rosco 3411 Rosco Sun 3/4 CTO Lighting Gel Sheet

Precisely warm your daylight-balanced sources to near-tungsten with this industry-standard 3/4 CTO gel sheet from Rosco.

$17.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Rosco 3411 Rosco Sun 3/4 CTO gel sheet is a color correction filter designed to convert 5500K daylight-balanced light sources down to approximately 3200K tungsten. This makes it invaluable in mixed-lighting scenarios where you need daylight-balanced fixtures to match the warmer tones of tungsten practicals or ambient interior light. As a 3/4 strength CTO, it applies about 75% of the full correction, which many users find produces a more natural and flattering warmth than a full CTO while still closing most of the color temperature gap.

Supplied as a flat gel sheet, it can be cut with scissors or a blade to fit any frame, barn door, or fixture. Rosco is one of the most widely used gel manufacturers in the film and photography industries, and the 3411 maintains the brand's reputation for optical consistency and color accuracy. Whether you are matching mixed sources on a film set, warming a key light for portrait photography, or adding creative warmth to a scene, this gel provides a simple and affordable solution that requires no power or digital processing.

Specifications

Brand
Rosco
Model
3411 SHEET ROSCO SUN
Type
Gel Sheet
Color
Rosco Sun 3/4 CTO
Conversion
5500K to 3200K
Format
Sheet

Pros & Cons

👍 Pros

  • Provides a precise 3/4 stop color temperature shift from 5500K toward 3200K for controlled warming
  • Sheet format allows custom cutting to fit virtually any light fixture or frame size
  • Industry-standard Rosco manufacturing ensures consistent color accuracy sheet to sheet
  • Useful as a creative warming tool as well as a technical color correction gel

👎 Cons

  • Sold as a single sheet, so larger productions requiring multiple fixtures will need several units
  • Will gradually fade and degrade under sustained high-heat tungsten lighting
  • Requires a gel frame or tape to mount on fixtures since no adhesive backing is included
  • Only provides one fixed level of conversion with no adjustability between partial and full CTO

Frequently Asked Questions

The Rosco 3411 Rosco Sun 3/4 CTO converts 5500K daylight-balanced light down to approximately 3200K tungsten, warming the output without going to a full CTO correction.
A full CTO gel converts 5500K all the way to 3200K, while a 3/4 CTO applies roughly 75% of that shift, landing slightly warmer than daylight but not as warm as full tungsten. This gives you a natural-looking warm tone without going entirely orange.
Yes, the sheet format is designed to be cut to whatever size you need, making it compatible with a wide variety of fixtures from small on-camera lights to larger studio panels and Fresnel lenses.
Rosco gels are manufactured to withstand the heat of professional lighting instruments, though prolonged exposure to very high-wattage tungsten fixtures will eventually cause fading. LED and fluorescent sources generate less heat and will extend the gel's usable life.

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