The 19th annual International Los Angeles Photographic Art Exposition, considered to be the foremost event of its kind in the U.S., opened to enthusiastic crowds in Santa Monica, Calif., on January 14. From provocative to pretty, images at photo l.a. encompassed popular black-and-whites by Henri Cartier-Bresson and the influential work of Diane Arbus, shocking documentary photos such as Eddie Adams' 1968 portrayal of a South Vietnamese police chief executing a Viet Cong officer (price: $35,000) and pleasing pop icon portraits by Alex GuoFeng Cao.