Technical Photography: focus on Reflected Ultraviolet (UVR) imaging.
The strength of technical photography lies in its ability to capture a wide range of images, where only a few may uncover crucial insights. In this case study of an early 20th-century Chinese painting on silk, the UVR image proves the most revealing. The white pigment used to highlight certain contours strongly reflects UV light and therefore appears bright in the UVR photograph. As a result, previously invisible details become visible.