The universal lens Rogonar-S has a relatively simple optical design and so a very attractive price. But the high performance capability of this lens meets the requirements of demanding amateurs or professional labs. It is available for many different film sizes up to roll film 6 x 9 cm.
The main application area of the Rogonar-S is enlargement in the scale range required for photographs in the standard formats. In this range, the lens with 4 elements in 3 groups provides high-quality results with only low light fall-off to the picture margin. Stopping down by 2 to 3 stops is recommended for optimal contrast and sharpness up to the image corners.
The recommended large scale range can also offer some interesting possibilities for cropped enlargements.
The Rogonar-S is equipped with a click-stop diaphragm which can be disabled on the models up from 50 mm for stepless control which is helpful for the use with pre-set exposure time mode. Furthermore, these models have an illuminated aperture display.