Assess the impact of photography on the 19th century political and social landscape

Problem:

Assess the impact of photography on the 19th century political and social landscape. How did it affect paintings? Use one example from Gardner's Art through the Ages and one from the Internet.

Compare Manet's Olympia to Millais's Ophelia. Discuss how each work represents the artist and his period. Use one example from Gardner's Art through the Ages and one from the Internet.