Abstract: An automatic focusing camera according to the present invention is an automatic focusing camera having a plurality of operation modes, including an information input device for entering a plurality of types of photographing information, an information analyzer for analyzing the photographing information entered by the information input device based on a fuzzy inference, and a mode determining device for determining one of the operation modes based on the result of the analysis of the information analyzer.

Abstract: According to this invention, a camera system has a camera body and a first and second lenses exchangeable to the camera body. The first lens comprises a device for outputting first data which indicates the first lens belongs to a first lens type. The second lens comprises a device for outputting second data which indicates the second lens belongs to a second lens type and third data with respect to the characteristic of the second lens.

Abstract: An autofocus camera system for automatically controlling an objective lens for focusing an object includes a focus detector for detecting a focus condition of the photographing lens with respect to the object, an infocus condition detector for detecting an infocus condition of the photographing lens, a plurality of focus adjusting modes including a first mode for prohibiting lens movement after detecting an infocus condition and a second mode for adjusting the photographing lens after detecting an infocus condition, and a selector for automatically selecting one of the focusing adjustment modes.

Abstract: A camera capable of blurring correction includes an acceleration sensor detecting camera-shake amount, and a blurring correcting device correcting blurring of image on the basis of the sensor output. When a lens of the camera is driven for automatic focusing, the blurring is not corrected using an output of the acceleration sensor. Accordingly, blurring is not wrongly corrected.

Abstract: A camera system which comprises a photo-taking lens assembly of varifocal type including a zooming lens and a focusing lens; a manipulatable member; a zooming drive device for driving the zooming lens during a manipulation of the manipulatable member; a focusing device for driving the focusing lens; a focal length detector for sequentially detecting a current focal length of the photo-taking lens assembly; a zooming amount calculator operable to repeatedly add or subtract a predetermined amount to or from the current focal length during the manipulation of the manipulatable member thereby to sequentially update a target focal length used as a reference for the drive of the zooming lens; a first control adapted to receive the target focal length updated by the zooming amount calculator for calculating the amount of deviation in focus which would occur before the target focal length is attained and also for controlling the focusing device so as to eliminate the amount of deviation in focus which has been calcul

Abstract: In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.

Abstract: In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.

Abstract: A distance measuring system of the active type for measuring a distance ranging from a short distance to a long distance with a high degree of accuracy. The system comprises light emitting means, three or more light receiving elements, and a selecting means for selecting output signals of different selected pairs of light receiving elements when the light emitting means emits light for first and second times for measuring distances within short and long distance ranges, respectively. The output signals in each selected pair are compared with one another to obtain ratios between them, and distances are calculated based on the ratios thus obtained. A distance to the object is then determined based on the calculated distances. Where the distance measuring system is incorporated in a camera, the lens of the camera is actuated in accordance with the distance value measured by the system.

Abstract: An automatic focus condition detecting device comprising an objective lens; a unit for receiving light from an object through the objective lens; a focus detecting unit responsive to the output of the receiving unit for detecting a focusing condition of the objective lens; a unit responsive to the output of the receiving unit for judging whether or not it is possible for the focus detecting unit to detect a focusing condition of the objective lens; a lens position detecting unit for detecting whether or not the objective lens is positioned within a predetermined range included in the lens driving range; a unit for driving the objective lens; and a unit for controlling the driving unit to drive the objective lens when the judging judges that it is impossible for the focus detecting unit to detect a focusing condition and, moreover, the lens detecting unit detects that the objective lens is positioned within the predetermined range, for the purpose of a search a lens position where the focus detecting unit can

Abstract: A camera comprises a taking lens having a zoom lens system, zoom lens driver for performing a zooming operation by driving the taking lens, first parameter detector for detecting a subject distance from a photographing scene, second parameter detector detecting light source data from the photographing scene, and controlling circuit for controlling the zoom lens driver so that the taking lens has a focal length automatically obtained on the basis of the subject distance and the light source data. The camera gives a photographer in advantage when, for example, a baby is photographed in the whole image plane at a relatively short distance indoors, or a subject such as the whole body of a child on a ground is photographed in the whole image plane at a relatively long distance outdoors.

Abstract: A camera system being comprised of a camera and an external device is disclosed. The external device is detachably mounted on the camera which memorizes a program or data necessary for executing a program therein.When the external device is mounted on the camera, they are connected electrically with each other and communicate therebetween in order to read a program or data memorized in the external device into a memory means provided in the camera. The camera is controlled according to the program designated by the external device.

Abstract: A photographic camera having a photographic operating device including a focus detecting circuit, a shutter control circuit, a light measuring circuit and a light emission control circuit, an adjustment data memory for storing adjustment data based on functional characteristics of the respective circuits of the photographic operating device and an adjustment circuit for adjusting the respective circuits by using adjustment data read from the adjustment data memory. The adjustment data memory is consituted by an EEPROM for making it possible to conveniently and readily rewrite the adjustment data. The adjustment data is calculated from a linear function expression established between a design value and an actual value for avoiding trial-and-error preparatory operations for the adjustment.

Abstract: A camera with its taking optical system having two alternative, large and small, focal lengths and its finder optical system so contrived that the image formed as its focal length is varied continuously is visible through the finder, the latter included in a zoom optical system. The camera calculates the magnification of the image in the finder the photographer intends after seeing it and the focal length selected by him with the condition of the finder's optical system taken into account, and the result is recorded in the film are trimming information at the time of photographing. At the time of printing the photographed image is trimmed according to the angle of vision determined on the basis of the trimming information.

Abstract: A dc motor wherein a driving force thereof can be used effectively with a simple and compact mechanical construction and a motor controlling system which can control such a dc motor to be driven efficiently. The motor comprises at least two coils, and change-over means for changing electric connection of the coils to change over the motor, when power is selectively supplied to the coils, between a first mode in which the torque produced is relatively high and the rotational frequency is relatively low and a second mode in which the torque is relatively low and the rotational frequency is relatively high. The motor controlling system includes selecting means for automatically selecting one of the first and second modes to control the change-over means is response to a given condition of the motor.

Abstract: A camera includes a taking lens for photographing an object, a detection device for detecting the brightness of the object, a driver device for driving the taking lens to change a first magnification representing image size of the object, a generator device for generating a signal of a second magnification irrespective of the first magnification, a direction device for directing an integrated magnification; and a determination device for determining both of the first and second magnifications according to the directed magnification and the detected brightness.

Abstract: An automatic focus control device including a plurality of photo-sensors corresponding respectively, to a plurality of focus detecting regions, an optical system for guiding light to the photo-sensors, a first calculating device for calculation first defocus amounts upon reception of signals from the photo-sensors, respectively, a storage for storing deviation amounts in a direction of an optical axis for the focus detecting regions, respectively and a second calculating device for calculating second defocus amounts corrected on the basis of the first defocus amounts and the deviation amounts, respectively.

Abstract: A lens retracting apparatus for a photo-taking device which comprises an interchangeable photo-taking lens, a main switch selectively switchable between an ON position for enabling an operation of the photo-taking device and an OFF position for inhibiting the operation of the camera, a focus detecting unit, a drive unit for selectively retracting and extending a focusing lens of the photo-taking lens toward an in-focus position on the basis of a result of focus detection carried out by the focus detecting unit, a discriminating unit for determining whether or not the photo-taking lens is retracted to a predetermined position, and a control means for driving the drive unit to retract the photo-taking lens only by switching off the main switch and also for stopping the drive unit when a condition in which the photo-taking lens is retracted to the predetermined position is determined by the discriminating unit.

Abstract: An improved focus detecting apparatus comprises a photographic lens, a focus detecting device for detecting the focusing condition of the photographic lens and a lens driving means for driving the photographic lens based on the focusing condition detected, and the photographic lens is driven, in advance, to a focusing position where a frequently used magnification rate determined in accordance with the focal length of said photographic lens is attained, and then driven to an in-focus position.

Abstract: An automatic focus control device including a plurality of photo-sensors corresponding, respectively, to a plurality of focus detecting regions, an optical system for guiding light to the photo-sensors, a first calculating device for calculating first defocus amounts upon reception of signals from the photo-sensors, respectively, a storage for storing deviation amounts in a direction of an optical axis for the focus detecting regions, respectively and a second calculating device for calculating second defocus amounts corrected on the basis of the first defocus amounts and the deviation amounts, respectively.

Abstract: A camera system being comprised of a camera and an external device is disclosed. The external device is detachably mounted on the camera which memorizes a program or data necessary for executing a program therein.When the external device is mounted on the camera, they are connected electrically with each other and communicate therebetween in order to read a program or data memorized in the external device into a memory means provided in the camera. The camera is controlled according to the program designated by the external device.