I am going to be in Johannesburg, South Africa for two weeks during the upcoming 2010 FIFA World Cup and wanted to get some tips on street photography. I'm going on a mission trip and will be in/near the slum areas of Soweto for much of the time I'm in South Africa. The rest of the time will be spent in the FIFA FanFest areas (much like an olympic village setting). I wanted to get some tips as far as general street photography goes ie- lenses to use and so on. I'm excited to go and know the picture possibilities will be endless. any poitners are much appreciated.