The Chauvet Pro Ovation Ellipsoidal HD Zoom Lens Tube (25-50°) is an adjustable lens tube for CHAUVET PROFESSIONAL E-Series Ovation fixtures and other compatible ellipsoidal lights. Its 25-50° variable focal length supports independent adjustment of beam angle and focal point, while dual aspheric lenses provide precise focus and crisp gobo projection. The lens tube has an IP20-rated black housing, an internal color-blending filter holder, and includes a gel frame and fixture yoke.