For one evening only, the ROM presents a lecture and exhibition that explores the revolutionary evolution of photography, from the first photographs in 1839 to the latest digital techniques. What do photographs depict and what is photography’s impact on social and political change? Investigate how innovations in photography have altered how photographs are made and consumed. Tickets: www.rom.on.ca/ programs, click What’s On Calendar, click May 31, or available at the door. $20 (online $18).