In April 1979, a book of fifteen colour photographs by William Eggleston was published in a limited edition of twenty. The photographs were taken from the second chapter of an unpublished larger work entitled Wedgewood Blue. Amidst his publications Chromes (2011), Los Alamos Revisited (2012), and the upcoming Democratic Forest (2014) and Election Eve (2016), all documenting his lifetime work, At Zenith constitutes a calm and experimental intermezzo from Eggleston's familiar loudness and intensity of colours. The photographer pointed his camera at the sky to focus on the clouds rolling by.

William Eggleston, born in 1939 in Memphis, is one of the most important contemporary American photographers. From the 1970s onwards, his work has significantly contributed to the recognition of colour photography as an artistic medium. Eggleston has published his work extensively, and it has been shown in many major exhibitions around the world. He continues to live and work in Memphis, and travels considerably for photographic projects.