Photokina is still the world’s leading imaging expo, but changes to its structure and a struggling industry may be pushing participants away. In a press release published to the expo’s website, the trade show’s organizer Koelnmesse revealed that Nikon, Leica and Olympus have all chosen to skip Photokina 2020. The announcement strikes a grim-but-hopeful note, under the headline “Photokina 2020: An Industry in Transformation, a Decisive Chance for the Future.” Stand: Leica, Halle2.2 “The imaging industry is currently undergoing massive…