Our photo contests have become so popular that we thought we'd take a minute to look back at our favorite winners so far, from Holga, to Summer, to Transportation. The winners were selected by readers' votes over a two-week period of grueling competition. Enjoy!Out next contest is Portraits. We want to see those soul-stealing photos we're always hearing about. Check out the contest page for more info.Left:Eye of a Tokay Gecko, winner of the Macro contest.Photographer's comment:Sunset Over Wheatfield, winner of the Summer contest.Photographer's comment:After Flight, winner of the Holga contest.Photographer's comment:The One, winner of the Water contest.Photographer's comment:Payphones Red Wall, winner of the Red contest.Photographer's comment:Cubicles, winner of the Cities contest.Photographer's comment:The Needles at Night, winner of the Night contest.Photographer's comment:Captured at F4, 30 second exposure, ISO1600, 17-mm focal length but two side-by-side vertical images were stitched together."The Land of Ghosts, winner of the Transportation contest.Photographer's comment:One mistake and this turns into scrambled eggs, winner of the Food contest.Photographer's comment:Wrong Era, winner of the Self-Portrait contest.Photographer's comment:Isla Azul, winner of the Blue contest.Photographer's comment:"White Island, Camiguin, Philippines."