Weddings come—ideally—but once a lifetime. Cheryl Richards makes sure the memories will last. Richards and her equipment dissolve into the background only to emerge with stunning black and white photojournalist-style images capturing the poignancy, humor, and beauty of the Big Day. How good is she? Even if the wedding doesn't turn out to be as perfect as your fantasy nuptials, Richards manages to make it seem as if it were. 224 Clarendon St., Boston, 617-424-7760.