Tamron USA Inc., Commack, N.Y., announced a new addition to its extensive Vari-Focal lens line-up that covers the telephoto range. The new 1/3 20-100mm F/1.6 Aspherical Vari-Focal covers the telephoto range that is normally covered only by zooms, yet the zoom function that makes the lens more costly is not utilized in many installations. It features a fast F/1.6 aperture that insures bright imaging even in dimly illuminated areas.