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Tate representatives pose for photographs next to British artist David Hockney's "Mr and Mrs Clark and Percy" during a photocall to promote the largest-ever retrospective of his work at Tate Britain gallery in London, Monday, Feb. 6, 2017. The exhibition, which opens to the public from February 9 and runs until May 29, celebrates the 79-year-old's achievement in painting, drawing, photography and video. (AP Photo/Matt Dunham) Image Credit: AP

It’s not often an artist finds himself occupying 12 rooms of London’s leading museum of British art and the front page of populist tabloid The Sun. But David Hockney is unique.

For curators of a major retrospective opening this week at Tate Britain, Hockney is an innovator whose 60-year career has taken in sketching, painting, printmaking, photography and digital iPad experiments. His depictions of sun-dappled Los Angeles swimming pools and wooded Yorkshire hills are among the best-known images in contemporary art.

To the tabloid, he’s a British icon, a “Yorkshire working-class lad made good,” famous for his round glasses, shock of blond hair (now grey) and contempt for smoking bans and other governmental intrusions.

Last week The Sun asked the artist to redesign its red masthead for a day, boasting that this meant a “free Hockney for every reader.” Hockney created a cartoon-style logo of sunrays and shadow, using a drawing app on his iPad. The tablet computer is a favourite tool of an artist who continues to experiment as he approaches his 80th birthday.

“The iPad has become his sketch book,” said Andrew Wilson, co-curator of the Tate exhibition, which opens on Thursday.

Wilson said that Hockney has always embraced the challenge presented by technology.

“As a student, he was introduced to printmaking, so he wanted to master that,” he said. “And he has mastered it in so many ways, he’s pushed the boundaries of printmaking.

“So of course when the possibility of drawing on an iPhone, and then on an iPad, came up, he wanted to master it. And he has, to the degree that it’s his favourite drawing tool now.”

Hockney’s iPad drawings fill the final room of the exhibition, which encompasses some 250 works: drawings, paintings in acrylic and oil, photo collages and videos. The oldest piece is a teenage self-portrait from 1954. The most recent paintings of his LA home were completed in 2016.

Wilson said Hockney has spent his career trying to answer a fundamental question: “How do you as an artist represent the world of three and four dimensions, feeling and emotion, on a two-dimensional surface?”

Hockney left grey Britain for southern California in the 1960s, and strove to capture the intense L.A. light and the rippling surface of swimming pools in paintings like A Bigger Splash.

Later, he experimented with photography. Instead of producing single photographs, which Hockney has dismissed as “looking at the world from the point of view of a paralysed Cyclops,” he combined scores of photos into multi-perspective collages of landscapes. His subjects included the Grand Canyon and the ironically American Pearblossom Highway.

In the early 2000s he looked afresh at the fields and forests of Yorkshire in a series of exuberant landscape paintings that combined bold colour with minute attention to the texture of snow on a hillside or blossom on a hawthorn hedge.

Wilson said that whatever its style, all Hockney’s art flows from his skill at drawing — a skill that requires him “to look very, very profoundly at the world.”

“That sense of really close looking at the world is itself an emotional act,” the curator said. “There’s a heck of a lot of emotion in these works.”

The show, which runs to May 29, is the fastest-selling in Tate Britain’s history. It moves on to the Pompidou Center in Paris from June 21 to Oct. 23, and New York’s Metropolitan Museum of Art from November to February.

Alongside the artistic journey, the exhibition charts how a gay, working-class youth from the unfashionable north of England went from outsider to national treasure.

In 1997, Queen Elizabeth II made Hockney a Companion of Honour, an award limited to 65 people “of distinction.” He is currently designing a stained-glass window for Westminster Abbey to honour the queen’s long reign.

He had a minor stroke in 2012, but still paints every day. He told the Sun: “It’s my work that keeps me young.

“I’ve been a professional painter for 60 years,” he said. “Sixty years of getting up every day and doing exactly what I want to do.”