Leica, KODAK, Minolta, Nikon, and Pentax are all competitors of Olympus in the camera industry. Leica is a German company that produces cameras, lenses, binoculars, and other optical products. KODAK is an American company that manufactures imaging products, including digital cameras. Minolta is a Japanese company that produces cameras, lenses, and other imaging products. Nikon is a Japanese company that produces cameras, lenses, and other imaging products. Pentax is a Japanese company that produces cameras, lenses, and other imaging products. All of these companies compete with Olympus in the camera industry, offering similar products and services.