Throughout his career, Hall has focused on painstakingly accurate
still-life paintings of everyday objects. He has said in the past that he chooses the objects both for their symbolism and for their formal relationships. In 2016, curator Liz Wylie suggested that he is moved and inspired by the effects of light on objects. In 1969, he taught at
Ohio Wesleyan University and while there travelled to nearby American museums and New York to see American
Pop art of the 1960s. As Wylie points out, such art had a huge role in allowing artists to pursue representational painting, especially in the face of the dominant art forms in their ascendancies at the same time – Minimalism and the various forms of conceptual art. Hall felt confirmed by American New Realist painters in his choice of
still-life subject, though what he painted varied. He choose grungy subject matter and painted on a huge scale. The result was fascinating and unique. While in Ohio, Hall created a gigantic
Garbage triptych measuring six metres long, which is now in the collection of the Nickle Galleries at the University of Calgary. He continued to paint this series when he moved back to Canada to Calgary, though over time, varied his practice to encompass new themes. He spent a year painting in New York in 1979/80, the same time that he painted his canvas
Harry (1980) and was given a touring one-person show by the
National Gallery of Canada. In the 1980s, Hall created his
Tourist Series and his Toys series, followed by his
Still-Life Portrait series, begun in 1984. These last works were featured in a one-person touring show organized by the
Agnes Etherington Art Centre at Queen’s University in
Kingston, Ontario, in 1989. Mixed in between all these series were his Mexican-themed paintings, done during his annual six-month stays there between 1988 and 1999, which culminated in a
retrospective exhibition at Mexico City's
Museo de Arte Moderno in 1994. He has received commissions from Calgary's Foothills Hospital, the Royal Bank of Canada, and Cineplex Odeon. In 2009, Hall and Calgary-based artist
Alexandra Haeseker, a long-time collaborator and colleague of Hall's, showed together in
Pendulum/ Pendula. The exhibition consisted of collaborative realistic paintings which both had done in Canada and Mexico from 1992 to 1998. Each painted half of the canvas. These paintings were seen in many public galleries – four in Mexico and four in British Columbia. In 2016, the Kelowna Art Gallery organized
John Hall: Travelling Light: A forty-five-year survey of paintings curated by Liz Wylie. The exhibition traveled to the Nickle Art Museum at the University of Calgary in 2017. In 2020, he based the composition and some of the elements of his paintings on art history, using still-life painting done in past centuries as a springboard. In 2025, he and
Ron Moppett did a show working together to create paintings on which both collaborated, one doing the frame, the other the canvas or vice versa, titled
Framed: John Hall and Ron Moppett at Loch Gallery, Calgary, Alberta. ==Selected public collections==