Norman Rockwell created the models for his paintings by posing real people and taking their picture. One of his works depicts a young couple filling out their marriage license. Originally he intended to depict the presiding clerk in "paternal beaming" mode, but when one of the photos caught the clerk-model slumped in his chair, staring absently off into space, that was what went into the final picture◊.
This was how William Wegman found his niche in film and photographs of Weimaraners. Previously struggling with his career as a painter, Wegman one day found his calling when his dog, Man Ray, wandered onto the set during his photo shoots. Finding it easier to incorporate his dog into the set, rather than keeping him off, he used Weimeraners as a template for his works thereafter.