In the 1970s, with the arrival of cost-effective video cameras and editing equipment, most notably, Sony's ¾-inch video and U-Matic editing systems, animatics came into regular use at ad agencies as sales tool for television commercials and as a guide to the actual production of the work. An animatic is a video recorded version of a hand-drawn storyboard with very limited motion added to convey camera movement or action, accompanied by a soundtrack. Similar to the Leica reel, animatics were primarily used for live action commercials.