Early representatives include Leica I Schraubgewinde (1930), Exakta (1936) and the Nikon F (1959).
Voice coil motors (VCMs) are used to control the lens movement to achieve fast and accurate autofocus.
[1] The VCM moves the lens elements to focus the light onto the sensor with high precision.
Even point-and-shoot cameras usually include a tripod socket.
Hot shoes have a common interface for basic flash functions, but often contain proprietary contacts inside for advanced flashes and data modules.