ETC Source Four lens tubes set the field angle of a Source Four (and Source Four LED / ColorSource Spot) ellipsoidal. Precision optical lenses in a rugged barrel deliver a crisp, even, high-contrast beam and are interchangeable so you can change beam angle without changing fixtures. Available as Standard, EDLT (Enhanced Definition) and XDLT (Extreme Definition) lens tubes, with fixed angles from 5° to 90° plus 15–30° and 25–50° zooms.
ETC Source Four lens tubes set the field angle of a Source Four (and Source Four LED / ColorSource Spot) ellipsoidal. Precision optical lenses in a rugged barrel deliver a crisp, even, high-contrast beam and are interchangeable so you can change beam angle without changing fixtures. Available as Standard, EDLT (Enhanced Definition) and XDLT (Extreme Definition) lens tubes, with fixed angles from 5° to 90° plus 15–30° and 25–50° zooms.
