Abstract: It is an object of the invention to provide coated particles excellent in the reliability of connection. The invention provides coated particles each comprising a metal-surfaced particle as a core and resulting from a partial surface modification of that core particle with an organic compound via a functional group (A) capable of binding to a metal.

Abstract: It is an object of the invention to provide coated particles excellent in the reliability of connection.

Abstract: A method is provided for forming a film having excellent anticorrosion properties on a metal surface without producing sludge, and without using phosphorus or chromium. In this method, the following steps (a)-(c) are performed on a metal material: (a) degreasing, (b-1) pretreatment if necessary, and (c) which comprises the following steps (c-1) or (c-2). The film-forming step (c-1) is a step for forming a film by bringing the metal material in contact with an aqueous solution comprising at least one of the following compositions (A), (B), (C) or (D): (A) is a monomer comprising a sulfonium group at one end of the molecule. (B) is a water-soluble polymer obtained by homopolymerization or copolymerization of the monomer (A). (C) is an emulsion or water-soluble polymer comprising a sulfonium group obtained by copolymerization of the monomer (A) and a radical-polymerizable unsaturated monomer excluding the monomer (A).

Abstract: An electronically controlled camera is disclosed which is capable of being operated in an automatic release mode in which a plurality of shootings can be automatically executed. A period of time between the first shooting, of the plurality of shootings, and the start of the automatic release mode, and another period of time between, each shooting, can be set arbitrarily.

Abstract: An automatic exposure control system for a camera includes selecting either a normal taking mode or an interval taking mode, determining an exposure value according to at least photometry data, setting a lower exposure value limit, wherein the lower exposure value limit in the interval taking mode is lower than the lower exposure value limit in a normal taking mode, and a strobe that operates when the exposure value is lower than the lower limit.

Abstract: An electronically controlled camera having a macro mode operating capability which is disabled in the event predetermined object-distance-information is not obtained which is required for automatically focusing the camera in the macro mode. In this event, the lens is automatically shifted from the macro position to a non-macro position to enable a properly focused photograph to be taken. The shifting of the lens is preferably performed in response to actuation of the shutter release button while the lens is in the macro position, without further actuation of the shutter release button. Further, the camera can be arranged to return the lens to a macro position after the photograph is taken.

Abstract: An electronically controlled camera is provided capable of being operated in an automatic release mode in which a plurality of shootings can be automatically executed. The camera includes a device for setting the number of shootings to be executed and a device for automatically setting the internal time between each shooting in accordance with the number of shootings set to be executed.

Abstract: An electronically controlled camera comprises a zoom lens which is capable of being driven to move in the direction of the optical axis thereof within a zooming area between a tele extremity and a wide extremity. A single operation member is provided for instructing the movement direction of the zoom lens, and the zoom lens is driven to move either stepwisely or continuously in accordance with the operating amount of the operation member.

Abstract: An electronically controlled camera having a macro mode operating capability which is disabled in the event predetermined object-distance-information is not obtained which is required for automatically focusing the camera in the macro mode. In this event, the lens is automatically shifted from the macro position to a non-macro position to enable a properly focused photograph to be taken. The shifting of the lens is preferably performed in response to actuation of the shutter release button while the lens is in the macro position, without further actuation of the shutter release button. Further, the camera can be arranged to return the lens to a macro position after the photograph is taken.

Abstract: An electronically controlled camera which takes a picture every time a preset interval passes and displays remaining time available until a picture taking operation is effected on a display portion by reducing the interval time. A display portion displays the taking number and prohibits the display of the remaining time at a time when interval photographing is being performed.

Abstract: A position detecting arrangement for detecting the position of a movable member relative to a reference position. The arrangement is particularly adapted for use in connection with electronically controlled cameras which include a zoom lens and includes a code information carrier which is able to transmit information indicative of a plurality of codes, at least one of the codes being used a plurality of times for identifying more than one position of the zoom lens, i.e., more than one focal length of the lens. The use of such "relative" codes permits the camera to be made more compact. However, the disclosed invention includes an arrangement for retaining a given number of "position" codes which correspond to the actual position of the lens, to thereby enable the camera to retain a given degree of accuracy in its object-distance-measuring unit for focusing the zoom lens.

Abstract: An electronically controlled camera having a zoom lens has an operational member for driving the zone lens between a tele position and a wide angle position. The zoom lens is moved toward the tele position when the operational member is moved in a normal direction. The zoom lens is moved toward the wide angle position when the operational member is moved in the reverse direction. A taking mode changing mechanism changes taking modes. A display device displays a taking mode. A control mechanism changes the taking mode to another taking mode when the taking mode changing mechanism is operated. A setting time changing device changes the setting time of a manual shutter (or interval) to another setting time under predetermined conditions when the camera is set in a manual shutter mode (or interval) and both the operational member and the taking mode changing mechanism are operated.

Abstract: An electronically controlled camera having a macro mode operating capability which is disabled in the event predetermined object-distance-information is not obtained which is required for automatically focusing the camera in the macro mode. In this event, the lens is automatically shifted from the macro position to a non-macro position to enable a properly focused photograph to be taken. The shifting of the lens is preferably performed in response to actuation of the shutter release button while the lens is in the macro position, without further actuation of the shutter release button. Further, the camera can be arranged to return the lens to a macro position after the photograph is taken.

Abstract: An apparatus for monitoring the operation of a measuring unit for obtaining information related to a predetermined parameter. The measuring unit provides an indication of said information having been measured, which can take the form of an indicator lamp, for example. The measuring unit includes a mechanism for inhibiting operation of the indicator for a predetermined time interval, after the elapse of a time period which is related to the information obtained by said measuring unit. The monitoring apparatus measures the length of time of the time period and provides an indication of the time period measured, preferably in terms of the monitored parameter. The disclosed invention is particularly suited to the monitoring of an distance measuring unit or a photometric unit for an automatic camera so that proper operation of such units can be confirmed without having to disassembly the camera.

Abstract: In an exposure control device employed in an electronically controlled camera, an exposure value, representing the relation between an exposure time and an aperture value, is determined in accordance with the brightness of an object to be photographed. In addition, the open F-number of a lens is determined based on a predetermined film sensitivity. When the exposure value is determined, it is limited to a predetermined minimum exposure value. In the camera, the minimum exposure value is compensated in accordance with the film sensitivity of the film to be used.

Abstract: An electronically controlled camera comprises a zoom lens which is capable of being driven to move in the direction of the optical axis thereof within a zooming area between a tele extremity and a wide extremity. A single operation member is provided for instructing the movement direction of the zoom lens, and the zoom lens is driven to move either stepwisely or continuously in accordance with the operating amount of the operation member.

Abstract: In an electronically controlled camera capable of being operated in an automatic release mode in which a plurality of shootings can be automatically executed, when the number of shootings to be executed, the interval time between each shooting is automatically set in accordance with the set number of shootings to be executed.

Abstract: In an electronically controlled camera, if an operating status thereof has been kept unchanged for a predetermined period of time, the operating status is automatically stored and power supply to the camera is automatically prohibited. When power is resupplied to the camera within another predetermined period of time, the operating status of the camera is set to the status which was stored before the prohibition of power supply.

Abstract: An apparatus for controlling a strobe which is used in a camera. The strobe control apparatus includes a charging time-limit selecting device for selecting one of plurality of charging times according to the operating conditions of the camera, and a charging voltage limit selecting device for selecting one of plurality of charge limit voltages according to the operating conditions of the camera. If the charged voltage of the strobe does not reach the selected charge limit voltage after the selected charging time has elapsed, charging is stopped. The strobe control apparatus also includes a charge prohibiting device for prohibiting charging if a predetermined charge prohibit time has not elapsed after charging is completed, so as to prevent damage to the strobe due to heat generated by frequent flashings. The predetermined prohibit time is changed, however, according to the sensed heat condition of the strobe.

Abstract: An apparatus for monitoring the operation of a measuring unit for obtaining information related to a predetermined parameter. The measuring unit provides an indication of said information having been measured, which can take the form of an indicator lamp, for example. The measuring unit includes a mechanism for inhibiting operation of the indicator for a predetermined time interval, after the elapse of a time period which is related to the information obtained by said measuring unit. The monitoring apparatus measures the length of time of the time period and provides an indication of the time period measured, preferably in terms of the monitored parameter. The disclosed invention is particularly suited to the monitoring of a distance measuring unit or a photometric unit for an automatic camera so that proper operation of such units can be confirmed without having to .?.dissassembly.!. .Iadd.dissassemble .Iaddend.the camera.