He might be best known for that black-and-white portrait of Steve Jobs. It appeared on the cover of Walter Isaacson’s biography of Jobs, and is exceptional because the photograph was taken in a mere 20 minutes—to the tech mogul’s delight—and captures the man’s enigma in a simple, straight-on stare.

The Scottish photographer Albert Watson has been making portraits for 50 years, and these images—whether of Andy Warhol or Kate Moss or Jobs—reflect the enduring zeal of their maker. “From the first minute I picked up the camera,” Watson writes in the introduction to an eponymous new book of his photographs, “I’ve had that passion [for photography] and, while I was shooting last week, I still had that passion.”