NEW YORK — Emerald Expositions announced that as of today, Photo District News (PDN) will no longer publish content. Rangefinder will shift to an all-digital content hub with the WPPI exclusive edition distributed at the show this February 23-27 in Las Vegas. There will be greater integration between Rangefinder and WPPI. AboutRangefinder, WPPI, and PHOTOPLUS are owned by Emerald Expositions, a leading operator of business-to-business trade shows in the United States. The company currently operates more than 55 trade shows, as well as numerous other face-to-face events.