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EP0532047A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of making photographic prints

Assignee: Fujifilm Holdings Corp
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Filing: 1992-09-11
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Granted: —
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Expires: 2012-09-11
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Abstract

Abstract A method of making photographic prints wherein photographic data relating to photographic conditions of an original frame is recorded on a photographic print at the time of photographing the original frame, so as to determine the print exposure amount for printing the original frame. When it is determined with reference to the photographic data that a primary subject of the original frame has a proper density on the photographic film, the original frame is printed at a basic print exposure amount which is determined without using density data of the original frame. If it is determined with reference to the photographic data that the basic print exposure amount should be corrected for the original frame, an exposure correction amount is calculated based on the photographic data and/or the density data of the original frame. The photographic data is, for example, discrimination data for indicating whether the original frame has been photographed under a proper exposure control, or brightness values measured in a plurality of divisional areas. The photographic data may also be primary subject position data for deriving the density of the primary subject from the density data of the original frame.

Inventors

  • 👤 Takaaki C/O Fuji Photo Film Co. Ltd. Terashita
  • 👤 Naoto c/o Fuji Photo Film Co. Ltd. Kinjo
  • 👤 Kunihiko c/o Fuji Photo Film Co. Ltd. Kanafusa
  • 👤 Shinpei C/O Fuji Photo Film Co. Ltd. Ikenoue

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 13:24
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735; G03B27/80; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09979; G03B2206/00; G03B2206/004; G03B2206/006; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243

Claims Analysis

Total Claims: 21
Claim 1
Independent Claim 180 words
A method of making photographic print from original frames (37b) recorded on a photographic film (37), each of said original frame having an image of a scene (10) consisting of a primary subject (16) and a background, said method comprising the steps of: recording discrimination data (38) for designating either a first or a second printing method on a recording medium in association with said each original frame when said each original frame is formed by photographing said scene by a camera; reading said discrimination data when printing said original frame; and selecting either said first or said second printing method based on said discrimination data, for printing said each original frame onto a photographic paper at a print exposure amount which is determined by using said selected first or second printing method, said first printing method calculating said print exposure amount on the basis of image density data obtained by measuring said original frame, and said second printing method calculating said print exposure amount by correcting a predetermined print exposure amount according to the type of said photographic film.
Claim 2
Dependent Claim 64 words
A method of making photographic prints as recited in claim 1, wherein said discrimination data is recorded for said original frame when said original frame is photographed under a photographic condition for which the camera can photograph said original frame at a proper exposure value based on said primary subject, and wherein said second printing method is selected when said discrimination data is detected.
Claim 3
Dependent Claim 59 words
A method of making photographic prints as recited in claim 1, wherein said discrimination data is recorded for said original frame when said original frame is photographed under such a photographic condition for which the precision of the exposure control of the camera becomes low, and wherein said first printing method is selected when said discrimination data is detected.
Claim 4
Dependent Claim 65 words
A method of making photographic prints as recited in claim 3, wherein said discrimination data is recorded for said original frames when said original frame is photographed under a photographic condition for which the camera judges that the exposure control system of the camera cannot deal with an exposure value which is determined in an exposure determining section by measuring light values of said scene.
Claim 5
Dependent Claim 40 words
A method of making photographic prints as recited in claim 4, wherein said discrimination data is recorded for said original frame when said original frame is photographed under a photographic condition wherein lack or excess of flash light may arises.
Claim 6
Dependent Claim 67 words
A method of making photographic prints as recited in claim 4, wherein said second kind discrimination data is recorded for a said original frame which is photographed under a photographic condition wherein a proper brightness measurement is difficult because the size of brightness measuring elements of the camera is larger than the facial area of an image of said primary subject focused on a brightness measurement device.
Claim 7
Dependent Claim 118 words
A method of making photographic prints as recited in claim 1, wherein there are two kinds of said discrimination data, the first kind discrimination data being recorded for a said original frame which is photographed under a photographic condition wherein the precision of the exposure control of the camera becomes low, and the second kind discrimination data being recorded for a said original frame which is photographed under a photographic condition for which the camera can photograph at a proper exposure value based on said primary subject, and wherein said first printing method is selected when said first kind discrimination data is detected, and said second printing method is selected when said second kind discrimination data is detected.
Claim 8
Independent Claim 188 words
A method of making photographic prints from original frames recorded on a photographic film, each of said original frame having an image of a scene consisting of a primary subject and a background, said method comprising the steps of: recording photographic data representing photographic conditions in association with said original frame when said original frame is formed by photographing said scene by a camera; reading said photographic data when printing; judging based on said photographic data whether said original frame is photographed by a camera under a proper photographic condition which is based on said primary subject, or is photographed by a camera of which the precision of the exposure control is low; selecting a first printing method when said original frame is improperly exposed, or a second printing method when said original frame is photographed under the proper photographic condition, wherein said first printing method calculates a print exposure amount on the basis of image density data obtained by measuring said original frame, and said second printing method calculates a print exposure amount by correcting a predetermined print exposure amount according the type of said photographic film.
Claim 9
Dependent Claim 30 words
A method of making photographic prints as recited in claim 1, wherein said recording medium for recording said photographic data is said photographic film on which said frame is photographed.
Claim 10
Independent Claim 225 words
A method of making photographic prints from original frames recorded on a photographic film, said method comprising the steps of: forming said original frame by photographing a scene containing a primary subject by means of a camera, said camera having a focus-lock function for measuring a distance of said primary subject while framing said scene such that said primary subject is disposed in a center of a viewfinder, a divided brightness measurement function for measuring brightness values in a plurality of divisional areas of said scene at the time of focus-locking, an automatic exposure control function for controlling exposure for photographing said scene on said photographic film based on brightness data obtained by said brightness measurement, and a data recording function for recording photographic data in a recording medium; and controlling print exposure for making said photographic print from said original frame in a photographic printer, by determining a print exposure amount based on a constant basic print exposure amount which is independent of the image density of said original frame to be printed and a correction amount for correcting said basic print exposure amount, said basic print exposure amount being a value necessary for printing a standard original frame recorded on a standard photographic film onto a photographic paper in an optimum condition, and said correction amount being determined based on said photographic data.
Claim 11
Dependent Claim 36 words
A method of making photographic prints as recited in claim 10, wherein said exposure control for photographing said scene is performed while putting emphasis on the brightness values measured in a central area of said scene.
Claim 12
Dependent Claim 116 words
A method of making photographic prints as recited in claim 11, wherein said photographic data includes said brightness values measured in said plurality of divisional areas, brightness data of the central area of said scene and brightness data of a peripheral area of said scene, said central area brightness data and said peripheral area brightness data being derived from said brightness values of said divisional areas, and said correction amount is calculated according to an equation which is determined for each of a plurality of ranges defined in a two-dimensional coordinate representing said central area brightness data and said peripheral area brightness data as parameters thereof, said equation containing said brightness values of said divisional areas.
Claim 13
Dependent Claim 116 words
A method of making photographic prints as recited in claim 11, wherein said photographic data includes said brightness values measured in said plurality of divisional areas, brightness data of the central area or a peripheral area of said scene, and camera magnification data, said central area brightness data or said peripheral area brightness data being derived from said brightness values of said divisional areas, and said correction amount is calculated according to an equation which is determined for each of a plurality of ranges defined in a two-dimensional coordinate representing said central area brightness data or said peripheral area brightness data and said camera magnification data as parameters thereof, by using these parameters for the calculation.
Claim 14
Dependent Claim 89 words
A method of making photographic prints as recited in claim 11, wherein said photographic data includes said brightness values measured in said plurality of divisional areas, brightness difference data between the central area and a peripheral area of said scene, and camera magnification data, and said correction amount is calculated according to an equation which is determined for each of a plurality of ranges defined in a two-dimensional coordinate representing said brightness difference data and said camera magnification data as parameters thereof, by using said parameters for the calculation.
Claim 15
Dependent Claim 119 words
A method of making photographic prints as recited in claim 11, wherein said photographic data includes said brightness values measured in said plurality of divisional areas, brightness data of the central area of said scene, brightness data of a peripheral area of said scene, and camera magnification data, said central area brightness data and said peripheral area brightness data being derived from said brightness values of said divisional areas, and said correction amount is calculated according to an equation which is determined for each of a plurality of ranges defined in a three-dimensional coordinate representing said central area brightness data, said peripheral area brightness data and said camera magnification as parameters thereof, by using these parameters for the calculation.
Claim 16
Dependent Claim 19 words
A method of making photographic prints as recited in claim 11, wherein said recording medium is said photographic film.
Claim 17
Independent Claim 291 words
A method of making photographic prints from original frames, comprising the steps of: forming said original frame by photographing a scene containing a primary subject by means of a camera, said camera having a multi-autofocusing function by which distance measurement of said scene is performed at a plurality of measurement points, and said primary subject is discriminated based on distance measurement data of said measurement points, for focusing a taking lens, a divided brightness measurement function by which said scene is divided into a plurality of areas correspondingly to said measurement points, for measuring brightness values in said divided brightness measurement areas, an automatic exposure control function for controlling exposure on photographing while putting emphasis on the brightness value of at least one of said divided brightness measurement areas which corresponds to at least one of said measurement points at which said primary subject is detected, and data recording function for recording position data representing a position of said primary subject within said original frame in a recording medium; reading said position data of said primary subject on printing; controlling print exposure for making said photographic print from said original frame by determining a print exposure amount based on a constant basic print exposure amount which is independent of image density of said original frame to be printed, and a correction amount for correcting said basic print exposure amount, said basic print exposure amount being a value necessary for printing a standard image recorded on a standard photographic film onto a photographic paper in an optimum condition, and said correction amount being calculated based on density data of an image of said primary subject which is detected from said original frame with reference to said position data of said primary subject.
Claim 18
Dependent Claim 66 words
A method of making photographic prints as recited in claim 17, wherein said camera further includes a viewfinder (86) having a liquid crystal display panel (87), said liquid crystal display panel having a plurality of finder areas which correspond to said plurality of brightness measurement areas, and displaying at least one of said finder areas which contains said discriminated primary subject, distinctively from other finder areas.
Claim 19
Dependent Claim 83 words
A method of making photographic prints as recited in claim 18, wherein said camera further includes a primary area selecting function (89) by which, when said multi-autofocus function detects a plurality of objects, said objects are sequentially indicated by distinctively displaying at least one of said finder areas which corresponds to each of said objects, in an order from the object for which the probability of being said primary subject is highest, so as to select said primary subject among from said objects.
Claim 20
Dependent Claim 35 words
A method of making photographic prints as recited in claim 19, wherein said at least one finder area corresponding to each of said objects is displayed distinctively from other finder areas in an intermittent fashion.
Claim 21
Dependent Claim 19 words
A method of making photographic prints as recited in claim 20, wherein said recording medium is said photographic film.

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