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US 8,274,568 B2Granted
Method for image data print control, electronic camera and camera system
AssigneeNikon Corporation
InventorsSatoshi Ejima, Tomoaki Kawamura
Life of this patent
Estimating the term…
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.
Claims16
An electronic camera comprising:
- a zoom changing unit configured to change a focal length of a zoom lens;
- an image-capturing unit configured to execute photoelectric conversion for a subject image projected by the zoom lens onto an image-capturing area;
- a range finding unit configured to detect a distance to a subject;
- an input unit configured to input a printing size;
- a zoom control unit configured to control the zoom changing unit based upon the printing size that has been input and the subject distance;
- and
- a display monitor at which a range indicator mark indicating a range substantially corresponding to the printing size superimposed on the subject image are brought up on display when the focal length of the zoom lens is at a maximum and a size of a range of the subject projected almost over an entirety of the image-capturing area is larger than the printing size.
4 more elements
An electronic camera comprising:
- a zoom changing unit configured to change a focal length of a zoom lens;
- an image-capturing unit configured to execute photoelectric conversion for an image of a subject projected by the zoom lens onto an image-capturing area;
- a range finding unit configured to detect a distance to a subject;
- an input unit configured to input a printing size;
- a mode setting unit operated to set a specified range photographing mode in which a size of the photographic range at a subject position is fixed at the printing size;
- a zoom control unit configured to control the zoom changing unit based upon the printing size and the subject distance when the specified range photographing mode is set;
- and
- a display monitor at which a range indicator mark indicating a range substantially corresponding to the printing size superimposed on the subject image are brought up on display when the focal length of the zoom lens is at a maximum and a size of a range of the subject projected almost over an entirety of the image-capturing area is larger than the printing size.
5 more elements
An electronic camera comprising:
- a zoom changing unit configured to change a focal length of a zoom lens;
- an image-capturing unit configured to execute photoelectric conversion for an image of a subject projected by the zoom lens onto an image-capturing area;
- a range finding unit configured to detect a distance to a subject;
- an input unit configured to input a printing size;
- a magnification factor setting unit configured to set a printing magnification factor;
- a mode setting unit operated to set a specified range photographing mode in which a size of the photographic range at a subject position is fixed at a value obtained by dividing the printing size by the printing magnification factor;
- a focal length calculating unit configured to:
- calculate a focal length at which the photographic range is projected almost over an entirety of the image-capturing area when the specified range photographing mode is set,
- change a focal length of the zoom lens to a first focal length and a second focal length by the zoom changing unit,
- detect a first reference image distance and a second reference image distance, which are respectively distances from the electronic camera to a first reference image and a second reference image at the first and the second focal lengths, respectively, when a size of a range of the subject projected almost over the entirety of the image-capturing area is almost the same, and
- calculate the focal length of the zoom lens when a size of a range of the subject projected almost over the entirety of the image-capturing area based upon the first and the second focal lengths, the first and the second reference image distances, and the distance to a subject detected by the range finding unit;
- and
- a zoom control unit configured to control the zoom changing unit so as to match the focal length of the zoom lens with the focal length calculated at the focal length calculating unit.
10 more elements
An electronic camera comprising:
- a zoom changing unit configured to change a focal length of a zoom lens;
- an image-capturing unit configured to execute photoelectric conversion for a subject image projected by the zoom lens onto an image-capturing area;
- a range finding unit configured to detect a distance to a subject;
- an input unit configured to input a printing size;
- a mode setting unit operated to set a specified range photographic mode in which a size of a photographic range at the subject position is fixed to the printing size;
- an electronic zoom unit configured to electronically enlarge a part of a subject image achieved based upon image information provided by the image-capturing unit;
- an electronic zoom control unit configured to control, the electronic zoom unit so as to enlarge an image corresponding to the photographic range in the subject image to a size matching a size of the subject image;
- and
- a display monitor at which a range indicator mark indicating a range substantially corresponding to the photographic range superimposed on the subject image are brought up on display when a focal length of a zoom lens is at a maximum and a size of a range of the subject projected almost over an entirety of the image-capturing area is larger than the printing size.
6 more elements
A camera system comprising:
- a zoom changing unit configured to change a focal length of a zoom lens;
- an image-capturing unit configured to execute photoelectric conversion for an image of a subject projected by the zoom lens onto an image-capturing area;
- a range finding unit configured to detect a distance to a subject;
- an input unit configured to input a printing size;
- a mode setting unit operated to set a specified range photographing mode in which a size of the photographic range at a subject position is fixed at the printing size;
- and
- a display monitor at which a range indicator mark indicating a range substantially corresponding to the printing size superimposed on the subject image are brought up on display when the focal length of the zoom lens is at a maximum and a size of a range of the subject projected almost over an entirety of the image-capturing area is larger than the printing size.
4 more elements
An electronic camera comprising:
- a zoom changing unit configured to change a focal length of a zoom lens;
- an image-capturing unit configured to execute photoelectric conversion for a subject image projected by the zoom lens onto an image-capturing area;
- an input unit configured to input a printing size;
- a range finding unit configured to detect a distance to a subject;
- a calculating unit configured to calculate (1) a focal length of the zoom lens based upon the printing size, the distance to a subject, a number of pixels along a width of the image-capturing area of the image-capturing unit, and a pitch of the pixels, and (2) a printing resolution based upon the printing size and the number of pixels along the width of the image-capturing area of the image-capturing unit;
- a recording unit configured to record subject image data with tag information into a recording area;
- and
- a display monitor on which an image of the subject is displayed;
- wherein:
- the tag information includes the printing size, the printing resolution, the focal length, the distance to a subject, and the number of pixels.
7 more elements
Dependencies are inferred from the claim text.