The Apo-Rodagon-N 90mm f/4 Enlarging Lens from Rodenstock is a high-resolution lens optimized for enlargers and printers as well as for CCD and CMOS cameras. This 90mm f/4 version supports film formats up to 6 x 7 and offers a recommended scale range of 2 to 15x. It can also be used as a high-resolution macro taking lens for film and digital cameras.

The lens is apochromatically corrected to the extreme to ensure the full elimination of color fringing and superior correction of chromatic aberration. All monochromatic imaging errors have also been greatly reduced to give this lens exceptional image reproduction performance. The advantages are clearly visible in both color and black and white enlargements. The optimal working aperture is reached by stopping down by only 1 to 2 stops.

The lens features a click-stop diaphragm and an illuminated f-stop display. It also has a preset aperture and allows the click-stop to be de-clicked for stepless control. The Apo-Rodagon-N edition is designed for the highest demands and is suitable for beginners and professionals.

For attaching the lens, two optional adapters are supported: an M 39 x 1/26" standard version, and an M 39 x 1/26" special version that shuts out light from the aperture display.