is a Japanese manufacturer of optics and reprography products. Olympus was established on 12 October 1919, initially specializing in microscopes and thermometers. Olympus holds roughly a 70 percent share of the global endoscope market, estimated to be worth approximately US646 million in kickback fines in 2016. In 1936, Olympus introduced its first camera, the Semi-Olympus I, fitted with the first Zuiko-branded lens. The Olympus Chrome Six was a series of folding cameras made by Takachiho, and later Olympus, from 1948 to 1956, for 6×4.5 cm or 6×6 cm exposures on 120 film. The first innovative camera series from Olympus was the Pen, launched in 1959. It used a half-frame format, taking 72 18×24 mm photographs on a standard 36-exposure 35mm film cassette, which made Pen cameras compact and portable for their time. The Pen system design team, led by Yoshihisa Maitani, later created the OM system, a full-frame professional 35mm SLR system designed to compete with Nikon and Canon's bestsellers. The OM system introduced a new trend towards more compact cameras and lenses, being much smaller than its competitors and presenting innovative design features such as off-the-film (OTF) metering and OTF flash automation. Eventually the system included 14 different bodies, approximately 60 Zuiko-branded lenses, and numerous camera accessories. In 1983, Olympus, along with Canon, branded a range of video recording equipment manufactured by JVC, and called it "Olympus Video Photography", even employing renowned photographer Terance Donovan to promote the range. A second version of the system was available the year after, but this was Olympus's last foray into the world of consumer video equipment until digital cameras became popular.