GimpLensfun is described as 'Gimp plugin to correct lens distortion using the lensfun library and database' and is an app. There are 2 alternatives to GimpLensfun for Windows and Mac. The best GimpLensfun alternative is ShiftN, which is free.
ShiftN is an intelligent tool capable of analyzing photos and fixing the line distortion (line convergence) effect automatically or with minimal user’s input. Batch processing. The software analyzes the source image, detects vertical lines and performs the correction, making...
PTLens is a software that correct lens pincushion or barrel distortion, chromatic aberration, vignetting, and perspective in normal and fisheye lenses.
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