Once again, National Geographic is holding its annual photo contest, with the deadline for submissions coming up on November 30. Beginning on September 1, the society started gathering and presenting galleries of submissions, encouraging readers to vote for them as well. National Geographic was kind enough to let me choose among its entries from 2012 for display here on In Focus. Gathered below are 50 images from the three categories of People, Places, and Nature, with captions written by the individual photographers.