PARIS (AP).- He’s an uncontested master with a pen and sketchbook, on which he’s been rattling off blockbuster ready-to-wear and haute couture collections for decades. But Chanel designer Karl Lagerfeld is also gifted with a camera. A new Paris exhibition showcases the gamut of Lagerfeld’s photography, from his commercial work for Chanel to celebrity portraits for magazines to more experimental landscapes and architectural pieces. The show — which kicked off Tuesday with a star-studded and Champagne-soaked opening at the Maison Europeene de la Photographie — brings together about 300 of the designer’s shots and is billed as the largest-ever exhibit of his photographs. Lagerfeld first took up photography in 1987, and the show,