PTLens is software that corrects lens pincushion/barrel distortion, vignetting, chromatic aberration, and perspective. The following operating systems and applications are supported: PC (Windows 2000 or later, screen resolution at least 1024x768 DPI 96 or 100%) Standalone application (JPEG, 8 or 16-bit TIFF) External editor for Lightroom or Capture One (JPEG, 8 or 16-bit TIFF) Plug-in for Photosho