While traveling the world to teach her photography workshops, photographer Sujata Setia has been working on a long-running photo series in which she asks elderly couples who have been married for decades to pose for engagement-style photos for them to keep. “It’s just the pleasant shock of never, ever imagining that someone would ask them to pose like a newly married couple at 80 years old,” the London-based child portrait photographer tells HuffPost. “I tell them to hold hands, kiss.…