I learned long ago that it’s best to approach your heroes with trepidation, because they rarely live up to expectations. So when I met Elliott Erwitt in Perpignan, France, years ago, when we both had shows for Visa Pour l’Image, I was reluctant to talk to him. Imagine my surprise when he asked to trade prints. I upped the ante and asked whether if I bought his book, “Personal Best,” he would sign it for me.“Don’t buy my book,” he said. “It’s much too heavy to carry on the plane.”