The ETC Source Four 50° lens tube provides a wide, smooth beam ideal for short-throw applications, stage washes, and large area coverage. Designed for compatibility with all ETC Source Four and Source Four LED Series fixtures, this standard (non-enhanced) version delivers ETC’s legendary optical quality with excellent edge control and uniformity.

Constructed from durable aluminum with precision-ground borosilicate glass lenses, the 50° tube produces a soft, even field while maintaining sharp focus capability. Perfect for stages, studios, or architectural installs where broad, even coverage is required.

Specifications:
Beam Angle: 50° (wide coverage)
Version: Standard / Non-Enhanced
Compatibility: ETC Source Four, Source Four LED, and Source Four CE
Lens Type: Dual-element, anti-reflective coated glass
Material: Aluminum housing with integrated focus knob
Mounting: Standard ETC twist-lock barrel design
Field Angle: 50° nominal at 19°–22° zoom equivalent
Weight: Approx. 3.5 lbs (1.6 kg)

Key Features:
Produces a smooth, wide 50° beam for short-throw coverage
Compatible with all ETC Source Four and LED Series fixtures
Standard (non-enhanced) optical design for consistent output
Durable aluminum housing with easy field replacement
Ideal for theaters, studios, and event lighting

Applications:
Stage wash and short-throw lighting
Theater and studio lighting setups
Architectural and event uplighting
Trade shows, exhibits, and education spaces

Comparable Models:
Comparable to the ETC Source Four 50° Standard Lens Tube and similar wide-angle optics from Altman and Strand Lighting.