The answer is as follows:
1, rotate switch 1 to the left to the red camera mark, then press the 2 button to start recording video.
2, 70D shoot video can adjust the aperture and sensitivity, but there will be mode limitations, to be able to fully adjust the parameters, it is recommended to use the M gear.
(1) Canon (Canon ), is Japan's one of the world's leading production of integrated group of imaging and information products, since its inception in 1937, after many years of unremitting efforts, Canon has globalized its business and expanded into various fields.
(2) Canon's product lineup*** is spread across three main areas: personal products, office equipment and industrial equipment, with major products including cameras and lenses, digital cameras, printers, copiers, fax machines, scanners, broadcasting equipment, medical equipment and semiconductor production equipment. Canon is headquartered in Tokyo, Japan, and has four regional sales headquarters in the Americas, Europe, Asia and Japan, with 200 subsidiaries around the world, employing more than 100,000 people.On March 9, 2016, Japan's Toshiba held a board of directors meeting today and made a final decision to sell its Toshiba Medical Systems to Canon, which made an offer of ￥700 billion (about 40.5 billion yuan).
(3) In July 2018, the Fortune 500 list was released, and Canon ranked 317th in the "2018 Fortune 500".
(Source: Baidu Encyclopedia: Canon)