How did photography improve the work of textual critics in the late 19th century?

In the late 19th century, the perfection of photography emerged as a significant technical advancement for the field of textual criticism. Prior to this development, scholars often had to travel extensively to locate and examine primary source materials in person.

The introduction of photography fundamentally changed this process by allowing paleographers and critics to assemble and study manuscripts at their own desks, rather than requiring them to visit distant repositories. This innovation made the research process more efficient and significantly reduced the expenses associated with accessing rare or geographically dispersed texts. By enabling the reproduction of documents, photography provided scholars with a reliable way to analyze handwriting and textual evidence without the logistical constraints of physical travel.12