Professionals and hobbyists who want to use larger film sizes should consider a 300 mm f/9.0 lens that offers proven technology for correcting chromatic aberration while producing crisp, brilliant photos without the color fringes. The "Apo" technology behind the Rodenstock Apo-Ronar meets this need. The Apo technology enables this Rodenstock camera lens to produce lifelike images on film as large as 5 x 7-inches. What's more, with a viewing angle of roughly 48-degrees, the Rodenstock Apo-Ronar produces 1:1 reproductions of photographic subjects, which should fulfill the demands of many close-up shots. Plus, the Apo technology's emphasis on low distortion and finer image sharpness makes this 300 mm f/9.0 lens a worthy choice for general photography as well. In addition, this Rodenstock camera lens' aperture can be adjusted down to one more number to perform shots that need a greater depth of field. This makes the Rodenstock Apo-Ronar a durable, time-tested lens that neither professional photographers nor camera enthusiasts will outgrow.