Ever spent way too much on a luxury watch or handbag? We hear ya -- the Engadget closet is bulging with Balenciaga clutches we hardly ever take out any more. But do you know who we blame for these inexplicable lapses of consumer judgment? A professional photographer by the name of Mitchell Feinberg, who happens to own the world's largest digital sensor. He uses the $500,000 custom-built 8x10-inch camera back to help capture mouthwatering advertising stills for couture clients like Bulgari and
