As artificial intelligence continues to evolve and weave its way into our day-to-day, this year’s Magnum Print Sale is proving some things simply can’t be made by a computer. Titled Written by Light, this year’s instalment invites photographers worldwide to explore what photography means in the age of artificial intelligence, celebrating the fundamental difference between the practice of taking a photograph and AI-generated images: the use of light.

Available for one week only, Magnum has partnered with the World Press Photo Foundation to curate a selection of over 100 images from the likes of Martin Parr, David Hurn and Bob Henriques which place the art of photography at the fore, aiming to ensure viewers can navigate the difference between AI and the traditional photographic process.

Used as a medium to capture both history’s good and bad, this year’s sale includes the 1969 prize-winning image taken by Neil Armstrong of Buzz Aldrin on the Moon alongside moments of contemporary importance with Fatima Shbair capturing Palestinian children gathering around soft candlelight in Gaza during a fragile ceasefire. As light takes centre stage, landscape photography is perhaps more prevalent in the sale than ever before. M’hammed Kilito photographs the very last group of palm trees still standing in what used to be the Tanseest Oasis in southern Morocco while Sergio Larrain plays with shadows in his 1959 image of birds flying across the eerie grey sky above Trafalgar Square.

Speaking on this year’s sale, Magnum’s president Cristina de Middel said: “As photographers, we were all, at some point, seduced by light and the possibilities of capturing it in our own unique way. The time feels right to go back to our roots in the practice and reflect on the very origins of our photographic practice, to the camera obscura, and how an image is recorded by the impact of light on a surface.”

Magnum’s Square Print Sale is on until October 22nd, shop the full selection here.