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Method for image data print control, electronic camera and camera system

Inactive Publication Date: 2008-01-24
NIKON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] An object of the present invention is to provide a method for image data print control that enables printing of a subject image at a magnification factor of 1 and also at a specified magnification factor, and an electronic camera and a camera system that are capable of performing a photographing operation by taking into consideration possible eventualities of printing at a magnification factor of 1 or at a specified magnification factor to facilitate a printing operation at a magnification factor of 1 or at a specified magnification factor.

Problems solved by technology

However, while the image can be printed in a desired printing size at a desired printing resolution, there is no appropriate method that may be adopted to print the photographed subject in original size (magnification factor 1) or to print the photographed subject at a specified magnification factor.

Method used

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  • Method for image data print control, electronic camera and camera system
  • Method for image data print control, electronic camera and camera system
  • Method for image data print control, electronic camera and camera system

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first embodiment

[0072]FIGS. 1A and 1B show the electronic camera according to the present invention achieved in an embodiment, with FIG. 1A presenting a plan view of the electronic camera and FIG. 1B presenting a rear view of the camera. As shown in FIG. 1A, at the upper surface of an electronic camera 1, a main switch 4 through which a power on / off operation is performed, a shutter release button 5, a dial (command dial) 6 operated to select a recording mode or a reproduction mode and a display panel 7 on which camera information is displayed are provided. The recording mode in this context refers to a mode that allows a subject image to be photographed and the image data to be recorded, whereas the reproduction mode refers to a mode in which the recorded image data are read out and are reproduced and displayed on a display LCD 3 (see FIG. 1B) provided at the rear surface of the camera.

[0073] In addition, at the rear surface of the camera, a view finder eye piece window 8, zoom switching buttons ...

second embodiment

[0140] In the first embodiment explained above, the printing resolution k is calculated by using the expression (4) or the expression (5) which incorporates the error coefficient α. However, since the error coefficient α varies among individual cameras, the errors of various cameras cannot be corrected accurately by using a specific single error coefficient α. Accordingly, a method of correcting the error in each camera by photographing a reference chart with the camera is adopted in the second embodiment. In the following explanation, such a correction mode is referred to as a calibration mode, and the calibration operation to be detailed later is executed by, for instance, operating the dial 6 in FIG. 1 to set the electronic camera in the calibration mode. In the calibration mode, the printing magnification factor M is automatically set to M=1.

[0141]FIG. 15 presents a flowchart of the procedure implemented to calibrate the lens error. It is to be noted that a reference chart whic...

third embodiment

[0146] The third embodiment is now explained. The external appearance of the electronic camera achieved in the third embodiment and its circuit block diagram are identical to those of the electronic camera 1 in the first embodiment. Accordingly, FIGS. 1A, 1B and 2 should be referred to for their details, and their explanation is omitted. The electronic camera 1 in the third embodiment may be set in a specified size photographing mode in which the subject is photographed by fixing the size of the photographic range at the subject position to a selected printing size or a standard photographing mode which is equivalent to the recording mode in an electronic camera in the related art. Either mode is selected through the mode selector button 12.

[0147] The operation executed in the electronic camera 1 in the third embodiment is explained. In the electronic camera 1, the recording mode or the reproduction mode can be selected through the command dial 6. The recording mode includes the st...

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PUM

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Abstract

An electronic camera includes a zoom changing unit that changes a focal length of a zoom lens, an image-capturing unit that executes photoelectric conversion for a subject image projected by the zoom lens onto an image-capturing area, a range finding unit that detects a distance to a subject, a photographic range setting unit that sets a size of a photographic range at a subject position, and a zoom control unit that controls the zoom changing unit based upon the photographic range that has been set and the subject distance so that the subject within the photographic range is projected almost over the entirety of the image-capturing area.

Description

[0001] This is a Divisional of U.S. patent application Ser. No. 10 / 218,561 filed Aug. 15, 2002, which in turn is a continuation-in-part of U.S. patent application Ser. No. 10 / 115,912 filed Apr. 5, 2002 (now abandoned). The disclosure of each of these prior applications is incorporated herein by reference in its entirety. INCORPORATION BY REFERENCE [0002] The disclosures of the following priority applications are herein incorporated by reference: [0003] Japanese Patent Application No. 2001-107244 filed Apr. 5, 2001 [0004] Japanese Patent Application No. 2001-107245 filed Apr. 5, 2001 [0005] Japanese Patent Application No. 2001-247839 filed Aug. 17, 2001 [0006] U.S. patent application Ser. No. 10 / 115,912 filed Apr. 5, 2002BACKGROUND OF THE INVENTION [0007] 1. Field of the Invention [0008] The present invention relates to a method for image data print control, an electronic camera and a camera system. [0009] 2. Description of the Related Art [0010] After a photographing operation is pe...

Claims

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Application Information

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IPC IPC(8): H04N5/262
CPCH04N5/23245H04N5/23296H04N5/23293H04N23/667H04N23/69
Inventor EJIMA, SATOSHIKAWAMURA, TOMOAKI
Owner NIKON CORP