Software by Alexander Ziegler Software Development:

Software to highly precise capture and remove lens aberrations (radial and tangential distortion, vignetting). Clearly enhances photos taken with cheap lenses. Calibration parameters are automatically calculated from pictures taken of a calibration-map. Thus suitable for all cameras and lenses. Due to EXIF-data support images (also 16 bit) can be calibrated in batch-mode. Calibration data export possible with additional license.