PTLens Standalone And Photoshop Plugin v8.6 | 1.4 MB PTLens is Windows software that corrects lens pincushion/barrel distortion, vignetting, chromatic aberration, and perspective. PTLens is available as a standalone application or Photoshop plug-in. View examples of PTLens at work, or download the software for a free 10 image trial. Got a Mac? Try LensFix. Click on the picture for more images of Antarctica.