What is "photokina"

The Photokina (rendered in the promoters' branding as photokina) is the world's largest trade fair for the photographic and imaging industries. The first Photokina was held in Cologne, Germany, in 1950, and since 1966 it is held biennially in September at the koelnmesse Trade Fair and Exhibition Centre. Many photographic and imaging companies introduce and showcase state of the art imaging products at Photokina. The show has two main competitors, both annual shows held in different parts of the world. The CP+ show in Yokohama, Japan, originally the Japan Camera Show, has been held since the early 1960s. In the U.S., the main photography show is PMA@CES, which since 2012 has coincided with the International CES consumer electronics show in Las Vegas.