ETC Source 4 Profile
An efficient light which uses one or more lenses and an ellipsoidal reflector to focus the light into a sharp beam. They usually have a longer body than Fresnel and can be focused to form a sharp circular beam with little spill. This sharp beam enables the light to project gobos as well as using shutters to project a specifically shaped light beam. Most profiles have a fixed beam angle although zoom profiles are available, giving an adjustable beam size. Profiles are suited to projections and for lighting at medium and long ranges from the subject. Profiles can also be used for Effects projection when used with Animators and Gobo Rotators.