Abstract: A zoom lens camera includes a whole unit moving device to move a front lens group and a rear lens group together as a whole in an optical axis direction, and a relative moving means to vary a distance between the front lens group and the rear lens group. The whole unit moving means is driven during a zooming operation, and at least the whole unit moving means or the relative moving means is driven during a focusing operation to focus on a subject to be photographed.

Abstract: A control method of a zoom lens camera comprising a lens system having a movable front lens group and a movable rear lens group, a first motor for moving the front lens group, a second motor for moving the rear lens group, a first pulse encoder which is adapted to control the angular position of the first motor and a second pulse encoder which is adapted to control the angular position of the second motor. In such a zoom lens camera. the difference in the image plane position between the wide-angle position and the telephoto position is measured to obtain the necessary number of drive pulses for the motors, so that the zoom adjustment and the fB adjustment can be carried out without need of a mechanical zoom adjustment or a mechanical fB adjustment.

Abstract: Disclosed is a camera provided with a strobe system. The strobe system includes a capacitor to be charged. Charging voltage of the capacitor can be detected through an output terminal. The output terminal can be electrically connected and disconnected to and from the capacitor by a switching element. The circuit has an input terminal which receives a control signal. In response to the control signal, charging operation is enabled, and at the same time, the switching element is controlled to connect the output terminal to the capacitor. While, if the charging voltage has reached an upper limit, the charging operation is disabled and the output terminal is disconnected from the capacitor for a predetermined period of time by changing the status of the control signal.

Abstract: A reversible heat-sensitive recording medium comprising a reversible heat-sensitive recording layer containing a resin matrix and an organic low molecular weight material, and an overcoat layer, wherein an intermediate layer comprising an ultraviolet ray-crosslinkable or electron beam-crosslinkable resin as a main component is provided between the reversible heat-sensitive recording layer and the overcoat layer.