At art school in Paris Maja Forslund spent a lot time seated before croquis models, sketching their swiftly-moving poses every day for months. Those sessions have been the raw material of painters' careers for hundreds of years, teaching them to interpret and shape the human form, but when Forslund returned to the subject matter as a photographer, she broke new ground. The camera adds another dimension. Details that would be elided by the nature and...