Rodenstock HR Digaron-S 23mm f/5.6 Lens with Copal 0

The Rodenstock HR Digaron-S 23 mm f/5.6 is the first super wide-angle lens providing a large image circle of 70 mm allowing its use with nearly all types of technical cameras. Especially photographers of (interior) architecture or landscapes, who had to use analog film for extreme image angles until now, will be highly impressed by this lens. With the 37x49 mm sensor the focal length of this lens corresponds to a focal length of 16 mm for a 24x36 mm sensor.

The HR Digaron-S allows without any restrictions all possible camera movements of analog photography for sensors up to 33x44 mm. The image circles and camera movements must be adapted to smaller sensor formats proportionally to the format diagonal. In landscape and product photography, where often a reduced camera movement is sufficient, the HR Digaron-S can be applied even for a 37x49 mm sensor. As shown by the MTF-curves, even at the image corners sharpness is high enough to utilize the resolution power of the highest-performance sensors with up to 60 megapixels and a pixel pitch of only 6 µm (therefore we indicate the MTF for max. 80 line pairs per millimeter). An image quality almost impossible up to now is realized due to perfect correction of curvature of field, integration of the 2 mm thick sensor cover glass into the optical calculation and excellent correction of chromatic aberration in order to avoid color fringes.