Sony Mavica (1981)

In 1981, Sony startled the photographic world by creating a filmless, electronic camera for stills called the Mavica (from magnetic video camera). While exhibited only in prototype form, this camera pioneered an entire "still video" market segment, later to include the Canon RC-701 among others. It had an SLR design and was shown with 3 interchangeable lenses: 25mm f/2, a 50mm f/1.4 and a 16-64mm f/1.4 zoom[1].