Old Kodachrome slides in Clarence, N.Y.David Duprey/Associated Press
Kodachrome, the first film to effectively render color, was an instant hit and had its heyday in the 1950s and ’60s. Kodachrome was favored by still and movie photographers for its rich but realistic tones, vibrant colors and durability. Unlike other color film, Kodachrome was purely black and white when exposed. The three primary colors that mixed to form the spectrum were added in three development steps rather than being built into its layers.