A light fixture includes a housing, a light source, and a zoom mechanism. The light source is supported within the housing and emits light. The zoom mechanism selectively varies a beam angle of the light emitted from the light fixture and includes a lens and a movable element. The lens is fixed relative to the light source. The movable element is movable relative to the lens between a first position and a second position. The lens reflects a portion of the light emitted by the light source via internal reflection when the movable element is in the first position. The movable element is closer to at least a portion of the lens when the movable element is in the second position to at least partially frustrate the internal reflection.