Final answer:
Eugene Delacroix, a Romantic painter, discussed the potential benefits of photography through his innovative use of color and light in his paintings.
Step-by-step explanation:
The Romantic painter who wrote about the potential benefits of photography was Eugene Delacroix. Delacroix was a leading painter of the Romanticism movement in France and his use of brushstrokes and colors in his paintings influenced future trends. Although he did not directly discuss the benefits of photography, his innovative use of color and light in his paintings helped pave the way for the exploration of new artistic techniques, including photography.