Source Four LED Series 3

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    Ultimate in brightness and clarity with XDLT

    Meet the next generation of lens tubes. XDLT takes your Series 2 and Series 3 fixtures to a new level of brightness – especially when used from the farthest distances. Reduced light leak, improved pattern projection, and near-zero chromatic aberration make these lens tubes a must-have for the largest theatres.

    Product Features
    • 5°, 10°, 14°, 19°, 26°, 36°, 50°, and 70° field angles
    • Available in 15°- 30° XDLT Zoom
    • Near-zero chromatic aberration
    • Heightened pattern sharpness and contrast
    • Up to 71% brighter when used with Source Four LED Series 3 fixtures
    • Advanced, achromatic doublet lenses with anti-reflective coatings
    • Color-corrective lenses (available on 14, 19, 26 and 36 degree XDLT lenses) for the ultimate in contrast and clarity with reduced chromatic aberration
    • Requires XDLT barrels

    Source Four Series 3 with XDLT

    Source Four Series 3 with gobo

    Source Four with EDLT

    EDLT Comparison


    Stunning contrast and crispness for gobo images

    When your lighting situation requires precise optics for projecting images, gobos, and logos, the Source Four EDLT (Enhanced Definition Lens Tube) option is an invaluable addition to your fixture inventory. The EDLT attaches easily to any new or existing fixed-focus Source Four, Source Four LED, ColorSource Spot, or Source 4WRD luminaires. While increasing light output up to 22% over standard lenses, EDLT also provide heightened sharpness and stunning contrast to images when used as a pattern projector.

    Product Features
    • 19°, 26°, 36° and 50° field angles
    • Improved sharpness and contrast
    • Increased output
    • Advanced, dual aspheric lenses with anti-reflective coatings
    • Fits all new and existing ETC ellipsoidal fixture bodies
    • Requires standard barrels

    Standard Lens Tubes

    With the introduction of the iconic Source Four incandescent fixture in 1992, came a revolutionary set of lens tubes that have set the standard for quality around the world. The original Source Four lens tubes are only available from ETC and come in 5°, 10°, 14°, 19°, 26°, 36°, 50°, 70° and 90° field angles.

    • Requires standard barrels

    Standard Lens Tube

    Source Four Series 3 blue

    Zoom Lens Tubes

    Maximum brightness, maximum field-angle flexibility. With Zoom lens tubes you only need one fixture for a variety of field angles. Plus, these lenses make it easy: ETC's patented one-handed zoom operation makes adjustments quick, simple and safe. Technicians can focus with one hand and hold the ladder with the other.

    Product Features
    • 25º-50 º or 15º-30º field angles
    • 15°-30° XDLT Zoom available
    • Rated up to 750W
    • Rotating barrel ± 25º
    • Three-plane stainless-steel shutter blade assembly

    Series 3 Lumen Comparison

    Select a lens tube for additional data

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    Lens Tube Photometry

    Gel Frame and Gobo Holders for Source Four

    Safety issue with XDLT lens tubes

    Click to read more about the potential safety issue with 26 and 36-degree XDLT lens tubes.