Light, camera … razor blades?! How photography became an art form – in pictures

<p>A new exhibition – <a href="https://www.theguardian.com/artanddesign/2026/oct/19/light-and-magic-birth-of-art-photography-review-a-rhapsodic-show">which the Guardian gave five stars</a> – tells the story of the birth of art photography. Here are some of the most astounding image