Abstract: In a focusing state detector, a light beam transmitted through a photographing lens is divided into three light beams in three regions through a condenser lens and three converting optical systems. The three light beams are focused and formed as an image on three photoelectric converting portions and are photoelectrically converted to three kinds of electric signals. A correction calculator receives data of an integral time ratio provided by a charge coupled device at a plurality of time points from a correction coefficient calculator. The correction calculator corrects image data obtained by the three photoelectric converting portions by using a correction coefficient according to the integral time ratio. A phase difference calculator receives the corrected image data of the correction calculator and provides phase difference data.

Abstract: A trimming information recordable camera which is usable in cooperation with a labo-system in which a film is printed according to the trimming information written in the film when loaded in the camera. The camera comprises: a photographing lens having a plurality of focal lengths and capable of selecting one of the focal lengths; a zoom finder through which a view field angle can be changed; and a system for writing a trimming data in the film. The film is printed in accordance with the trimming data which is obtained from a data of the view field angle of the zoom finder and a data of a view field angle of the photographing lens.

Abstract: A camera having a television mode has a shutter unit for opening and closing a plurality of shutter blades used as a shutter and a diaphragm by rotating a step motor in normal and reverse directions; a photometric device for performing a photometric operation with respect to a photographed object; a mode switching device for selectively switching a television mode for photographing a picture image on a television screen and a normal mode for performing a normal photographing operation; a trigger switch for outputting an open signal in synchronization with an operation for opening the shutter blades and outputting a closed signal in synchronization with an operation for closing the shutter blades; and a calculator for calculating an exposure amount by photometric information provided by the photometric device when the normal photographing mode is selected by the mode switching device.