STMap Export is an add-on that bridges Blender's camera tracking with external compositing workflows, specifically tailored for Nuke. It provides solutions to transfer Blender's calculated lens distortion data to external node-based compositing software.

The tool offers two primary workflows: generating undistorted STMaps directly from a solved movie clip, and copying a Nuke LensDistortion node with exact distortion values to the system clipboard. It includes overscan percentage controls to handle barrel distortion that pulls pixels inward. Operators are available in both the Output Properties and the Movie Clip Editor sidebar.