One photographer captured couples embracing in restaurant booths in this city and collected them in a controversial book titled “The Secret [this city] of the ’30s.” An essay about that photographer coined his nickname: the “Eye of” (10[1])this city. The first-ever candid photograph was taken in this city (10[1])in 1838 by a man who developed a namesake process using an iodine-treated (10[1])silver plate and mercury vapor to produce images. (-5[1])In another image taken in this city, a man in mid-air leaps from a ladder into a puddle, illustrating its photographer’s concept of the “decisive moment.” During the interwar years, Man Ray photographed subjects like Pablo Picasso and Gertrude Stein in this city. For 10 points, name this European city home to Louis Daguerre and Henri Cartier-Bresson. ■END■ (10[1])