The Apo-Ronar is the classic process lens. With its outstanding definition, the Ronar is useful for more than process and product shots.
Though primarily intended for copying flat-work at a 1:1 magnification ratio, the Ronar's field angle of around 48 degrees makes it a first-class long focal length lens. They are light, compact and still superior in sharpness to a tele-type lens.
Outstanding 1:1 macro lens for the 4x5" and 5x7" formats