The Godox AR400 is a high power flash that I primarily uses for photogrammetry.

This flash is modified with a polarizing filter that can be cross polarized with a filter on the camera lens to create a diffuse reflection in images. This makes it optimal for photogrammetry because it ensures that the scan has the correct color (not a moving highlight) for the software to process.

To get optimal performance a matte black background should be used to prevent reflected light, that becomes un-polarized as it interacts with the backdrop, from hitting the scanned object. In an idealized scenario, the polarized flash would be the sole source of light in the image.,

Operator Manual