It added numerous Python commands for converting 3D data and managing object point groups, which significantly sped up the workflow for technical directors.
Release 4 introduced several "under the hood" improvements and tools that became standard for high-end matchmoving: 3dequalizer-4-release-4-full-version
This version refined the calculation core, which uses unique techniques to automatically compute individual weighting curves for every point, effectively weeding out "outliers" (tracking errors) on the fly. It added numerous Python commands for converting 3D
A concise video overview of the best new features introduced in this release. 3dequalizer-4-release-4-full-version