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Rosco Roscolux #348 Purple Jazz Lighting Gel — main product image
Rosco

Rosco Roscolux #348 Purple Jazz Lighting Gel

★★★★★5.0 (2 reviews)

At 14% transmission, Purple Jazz cuts through stage white to drop a dense, moody violet wash that reads as neon on camera and nightclub atmosphere in the room.

$11.00*
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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

Roscolux #348 Purple Jazz is a deep-saturation lighting filter with a 14% transmission rating — meaning it is a heavy, color-dense gel designed to dramatically transform the character of a white light source rather than subtly tint it. That 14% figure is the critical specification: it defines both the creative strength of the effect and the power budget you need to achieve it. The resulting color is described by Rosco as a "dusky purple," which is accurate — it sits between a rich violet and a muted magenta, with a slightly desaturated quality that reads as atmospheric rather than harsh. This spectral character is precisely what makes it effective for simulating purple neon tube lighting: real neon has a similar slightly-washed quality compared to a pure saturated LED violet.

In practice, Purple Jazz belongs in theatrical nightclub scenes, music venue rigs, film set practical neon simulations, and photography setups where a moody, cinematic purple atmosphere is the design goal. It is not a general-purpose color correction filter — it is a strong atmospheric effect gel built for moments that need commitment. The 20"×24" sheet format fits standard theatrical gel frames and cuts cleanly for custom applications. Roscolux material is an industry reference standard, and #348 in particular has a long professional track record in both live theater and film/television production as the go-to option when a nightclub purple atmosphere is called for in the design brief.

Key Features

Rosco

20x24

A dusky purple. Good for simulating purple neon or old night club atmosphere. (Transmission = 14%).

Specifications

Brand
Rosco
Model
Roscolux #348 Purple Jazz
ASIN
B00HELMWOK
Color
Purple Jazz (#348)
Transmission
14%
Sheet Size
20" × 24" (50 cm × 61 cm)
Application
Stage, film, photography lighting
Effect
Dusky purple; simulates purple neon / nightclub atmosphere

Pros & Cons

👍 Pros

  • Purpose-formulated for nightclub and neon atmosphere simulation — the dusky purple hue is specifically calibrated for this effect, not a generic saturated violet.
  • Roscolux material is an industry standard for professional stage and film use, with consistent dye batch quality across production runs.
  • 20"×24" sheet size accommodates standard theatrical gel frames and can be cut down cleanly for smaller fixtures.
  • At 14% transmission, the gel produces a dense, saturated color that resists washing out under ambient light — effective in partially lit environments.

👎 Cons

  • 14% transmission is very low — this gel demands powerful fixtures to achieve usable output levels, limiting its practical use with low-wattage LED pars without significant output penalty.
  • The dusky, desaturated quality of the purple can shift toward gray or blue-violet under certain camera color profiles, requiring white balance testing before use on camera-facing rigs.
  • Single sheet — for multi-fixture rigs, the per-sheet cost of building out a full Purple Jazz rig accumulates quickly versus purchasing a full gel book or roll.
  • No gel frame or mounting hardware included — requires a compatible gel frame accessory for the specific fixture it will be used with.

Frequently Asked Questions

At 14% transmission, this gel absorbs 86% of the fixture's output. A 500W Source Four passing through this filter will deliver roughly the equivalent output of a 70W bare fixture. Plan your rig accordingly — if you're using lower-wattage LED PARs, you'll need a higher-powered unit or to accept a dimmer wash than you would with a higher-transmission gel.
Roscolux gels are formulated for professional stage use including high-heat tungsten sources, but at 14% transmission, the gel is absorbing a significant amount of energy as heat. For extended runs with high-wattage tungsten fixtures, monitor the gel for fading or bubbling and replace as needed. LED fixtures, which generate far less heat at the gel plane, will extend the gel's service life considerably.
The "dusky purple" character of #348 tends to shift slightly toward blue-magenta under most camera color science, particularly with auto white balance active. Shooting in a fixed, warm white balance (3200K–4000K) will push the gel toward a richer, more saturated violet. Test against your specific camera before committing to a multi-fixture rig.
The sheet measures 20" × 24" (50cm × 61cm), which accommodates most standard theatrical ellipsoidals and PARs. It can be cut with scissors to fit smaller gel frames — Roscolux material cuts cleanly without tearing.
Yes — this is one of its primary design use cases. The deep, desaturated purple hue closely approximates the spectral character of purple neon tube lighting when projected onto a surface, making it effective for lighting backgrounds to simulate neon signage practicals without the infrastructure cost.

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