Rosco

Rosco 4332004897 Roscolux Medium Grey Lighting Filter

Cut scene luminance precisely to taste — Roscolux 98 Medium Grey reduces output by two full stops while leaving color temperature and rendering untouched.

$14.99*
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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 Roscolux 98 Medium Grey is a precision tool for anyone managing light levels with exactness. Where a dimmer introduces flicker risk at certain shutter speeds and color shift at reduced output, this filter reduces fixture luminance by a clean two stops while leaving the source's spectral character entirely intact. On set or in a studio, that neutrality matters — you can balance a brighter key against a softer fill, pull a practical lamp down to match your exposure, or reduce a fresnel's punch without touching its color temperature. It's the right answer when the question is purely about intensity, not color.

Cut from Rosco's co-extruded polycarbonate and deep-dyed polyester stock, the 20×24" sheet is engineered for the thermal demands of continuous production lighting. The deep-dye process embeds the density uniformly through the material rather than coating the surface, which means the filter resists fading and density shift even under sustained heat from HMI and tungsten sources. The large sheet format allows it to cover fixture apertures directly or be trimmed cleanly to fit standard gel frames without edge degradation. For a filter that needs to match a calibrated exposure reduction night after night, the Roscolux 98 delivers without variation.

Key Features

ENHANCED COLOR ACCURACY - Roscolux 98 Medium Gray filter ensures true color representation, maintaining the integrity of your lighting design for professional results every time.

SUPERIOR DURABILITY - Crafted for longevity, this Rosco filter withstands high temperatures and prolonged use, offering reliable performance throughout extended photoshoots.

OPTIMIZED LIGHT TRANSMISSION - Roscolux filters provide consistent light quality, reducing hotspots and ensuring even illumination across your subject for flawless photography.

VERSATILE SIZE AND SHAPE - The 20x24" sheet offers extensive coverage, easily cut and adapted to fit various lighting fixtures, providing flexibility in studio setups and designs.

SIMPLE AND INTUITIVE USE - Easily integrate this filter into your existing lighting setup; its user-friendly design ensures quick application and immediate enhancement of your lighting effects.

CONSISTENT PERFORMANCE - Roscolux filters deliver uniform color and density, ensuring repeatable and predictable results, essential for maintaining consistency across multiple shoots.

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No further features available.

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Specifications

Brand
Rosco
Model
Roscolux 4332004897
Filter Type
Medium Grey Lighting Filter
Color Accuracy
Enhanced
Durability
Superior, withstands high temperatures and prolonged use
Light Transmission
Optimized, consistent light quality
Size
20x24 inches
Ease of Use
Simple and intuitive
Performance Consistency
Uniform color and density

Pros & Cons

👍 Pros

  • A precise −2.0 density reduction gives lighting designers an exact, repeatable reference point for matching output levels across a multi-fixture rig.
  • Neutral spectral transmission means color temperature and CRI remain unchanged — you're shaping intensity, not introducing a color cast.
  • The 20×24" sheet covers large fixture apertures and can be cut to any custom size without fraying or edge degradation.
  • Deep-dye construction maintains consistent density and color neutrality across extended use at elevated temperatures.
  • At 25% transmission, this filter enables significant output reduction without stacking multiple lighter-density sheets, which can introduce unwanted interference patterns.

👎 Cons

  • At −2.0 stops, this is a significant light reduction — there's no half-stop intermediate in this single sheet; precise fine-tuning requires stacking with lighter ND or diffusion materials.
  • The flat sheet format offers no structural rigidity on large-aperture fixtures — it requires a proper gel frame to prevent bowing or contact with hot lamp housings.
  • No protective storage included; the large sheet is susceptible to creasing and surface scratching in a gear bag without a dedicated gel sleeve or tube.
  • Not suitable as an optical neutral density filter for camera use — it lacks the optical flatness required for in-lens applications.

Frequently Asked Questions

Roscolux 98 transmits 25% of incident light, which corresponds to a reduction of exactly two stops (−2.0 density). In practical terms, if your fixture is calibrated at a specific output, placing this filter will require you to open your iris two stops or increase source power fourfold to match the unfiltered reading.
The filter is a neutral density diffusion — it reduces luminance without introducing a color shift or affecting the spectral output of the source. Color temperature and color rendering remain consistent with the unfiltered fixture. It's the appropriate choice when you need to reduce intensity without touching your white balance.
Yes. The co-extruded polycarbonate and deep-dyed polyester construction cuts cleanly with scissors and holds a precise edge. It's designed to be trimmed to fit ETC Source Four gel frames, Fresnel doors, or any custom aperture without fraying or delaminating.
Roscolux filters are rated for sustained use in high-temperature continuous fixtures. The deep-dyed construction resists fading and dimensional change under heat. For extended close-proximity placement on high-wattage sources, a ventilated gel frame is recommended to allow heat dissipation and extend filter life.
This is a lighting filter designed for use over fixtures, not a camera-mount optical ND filter. It has no anti-reflection coating and is not optically flat to imaging standards. Use it to reduce source output, not in front of a lens.