Mack presents "Puglia Tra albe e tramonti" by Luigi Ghirri, a captivating ode to the southern Italian region.

Street photography, a genre with a rich and varied history, encompasses some of the medium's most prominent figures and some of the most captivating and iconic images ever captured. Assembling a list of its most important exponents is no mean feat, but this is what we've attempted to do: select what we believe are the 50 best street photographers of all time, each of whom has left a profound mark on the style.