The Rodenstock 90mm f/5.6 HR Digaron-W/SW Lens with eShutter is optimized for digital imaging sensors. It comes with a Rodenstock eShutter that is easily controlled by a computer or mobile device, and the lens produces a 120mm image circle for formats up to 54 x 74mm in size. This allows for large movements without a reduction in image quality. The lens is designed for use with high resolution digital sensors, which are sensitive to diffraction and low-light conditions. This is done by optimizing the working aperture range of f/5.6-11, minimizing diffraction while still letting in a moderate amount of light. Additionally, this lens has been specially corrected to nearly eliminate distortion and curvature of field.