" he had said that he had used a camera obscura device to paint his pictures. It had seemed such an unlikely theory, and yet Hockney’s explanation made it seem so feasible. It was all to do with angles and perspective, and when you came to look at a Vermeer, there was a definite photographic feel to the artist’s work. "

― Alexander McCall Smith , The Novel Habits of Happiness (Isabel Dalhousie, #10)