Image pickup apparatus

Abstract

An image pickup apparatus includes: an image pickup unit; a first connection unit that allows a stereoscopic shooting interchangeable lens and an ordinary shooting interchangeable lens to be selectively attached thereto so that an image of a subject can be formed on the image pickup unit; a second connection unit that allows a finder including two display units corresponding to a right eye and a left eye, the finder being capable of displaying a plurality of images, and a finder including a single display unit, the finder being capable of displaying a single image, to be selectively attached thereto; and a display control unit that controls display of an image picked up by the image pickup unit on the finder, based on at least one of information on the interchangeable lens connected to the first connection unit and information on the finder connected to the second connection unit.

What is claimed is: 
     
         1 . An image pickup apparatus comprising:
 an image pickup unit;   a first connection unit that allows a stereoscopic shooting interchangeable lens and an ordinary shooting interchangeable lens to be selectively attached to the first connection unit so that an image of a subject can be formed on the image pickup unit;   a second connection unit that allows a finder including two display units corresponding to a right eye and a left eye, the finder being capable of displaying a plurality of images, and a finder including a single display unit, the finder being capable of displaying a single image, to be selectively attached to the second connection unit; and   a display control unit that controls display of an image picked up by the image pickup unit on the finder, based on at least one of information on the interchangeable lens connected to the first connection unit and information on the finder connected to the second connection unit.   
     
     
         2 . The image pickup apparatus according to  claim 1 , further comprising
 a display unit arranged on a back surface of a main body of the apparatus, and a touch panel on the display unit,   wherein the display control unit controls display of the picked-up image based on a result of operation of the touch panel.   
     
     
         3 . The image pickup apparatus according to  claim 1 , further comprising
 a vertical/horizontal direction detecting unit that detects whether the main body of the image pickup apparatus in which the image pickup unit is arranged is vertically or horizontally held, and outputs vertical/horizontal direction detection information,   wherein the display control unit controls the display of the picked-up image, based on at least one of the information on the interchangeable lens, the information on the finder and the vertical/horizontal direction detection information.   
     
     
         4 . The image pickup apparatus according to  claim 1 ,
 wherein the display control unit obtains the information on the interchangeable lens as a result of the interchangeable lens being connected to the first connection unit, and obtains the information on the finder as a result of the finder being connected to the second connection unit.   
     
     
         5 . The image pickup apparatus according to  claim 1 ,
 wherein when a stereoscopic image has been picked up by the image pickup unit, the display control unit sets a right-eye image area and a left-eye image area in which a right-eye image and a left-eye image included in the stereoscopic image are formed, respectively, on an image pickup plane of the image pickup unit based on information on the image pickup plane of the image pickup unit and the information on the interchangeable lens, and provides a right-eye image and a left-eye image read from the right-eye image area and the left-eye image area to two display units corresponding to the right eye and the left eye, respectively, to make the display units display the right-eye image and the left-eye image.   
     
     
         6 . The image pickup apparatus according to  claim 3 ,
 wherein the display control unit rotates the picked-up image based on the information on the interchangeable lens, the vertical/horizontal direction detection information and information on a direction of a line connecting the two display units, and provides the picked-up image to the finder to make the finder display the picked-up image.   
     
     
         7 . The image pickup apparatus according to  claim 1 ,
 wherein the display control unit performs enlarging/reducing processing on the picked-up image based on the information on the interchangeable lens, the information on an image pickup plane of the image pickup unit and the information on the finder, and provides the picked-up image to the finder to make the finder display the picked-up image.   
     
     
         8 . The image pickup apparatus according to  claim 1 ,
 wherein the stereoscopic shooting interchangeable lens is rotatably attached to a main body of the image pickup apparatus in which the image pickup unit is arranged, the stereoscopic shooting interchangeable lens enabling stereoscopic shooting irrespective of the direction of the main body of the image pickup apparatus.   
     
     
         9 . The image pickup apparatus according to  claim 3 ,
 wherein when a stereoscopic image has been picked up by the image pickup unit, the display control unit sets a right-eye image area and a left-eye image area in which a right-eye image and a left-eye image included in the stereoscopic image are formed, respectively, on an image pickup plane of the image pickup unit based on information on the image pickup plane of the image pickup unit, the information on the interchangeable lens and vertical/horizontal direction detection information.   
     
     
         10 . The image pickup apparatus according to  claim 1 , further comprising:
 a main body display unit provided in a main body of the image pickup apparatus, in which the image pickup unit is arranged,   wherein when a stereoscopic image has been picked up by the image pickup unit, the display control unit makes the main body display unit display a right-eye image and a left-eye image included in the stereoscopic image by time sharing.   
     
     
         11 . An image pickup apparatus including an image pickup unit, the image pickup apparatus allowing a stereoscopic shooting interchangeable lens to be connected thereto so that an image of a subject can be formed on the image pickup unit, the image pickup apparatus comprising:
 a communication unit that obtains correction factor data for correcting a reproducibility defect in the image of the subject formed on the image pickup unit, the defect being caused by the interchangeable lens based on a state of a lens system in the interchangeable lens; and   an image correcting unit that generates an image in which a displacement of the image of the subject has been corrected based on the correction factor data obtained by the communication unit.   
     
     
         12 . The image pickup apparatus according to  claim 11 ,
 wherein the correction factor data is intended for correction of at least one of optical distortion, image overlap and a brightness error caused by the stereoscopic shooting interchangeable lens.   
     
     
         13 . The image pickup apparatus according to  claim 11 ,
 wherein the correction factor data includes at least one of a lens type, a shooting lens baseline length and error information specific to the interchangeable lens.   
     
     
         14 . The image pickup apparatus according to  claim 11 ,
 wherein the correction factor data is intended for correction of displacements of a plurality of images of the subject formed on the image pickup unit, respectively, each of the displacements being caused in a direction of rotation relative to a principal light ray from the subject.   
     
     
         15 . The image pickup apparatus according to  claim 11 , further comprising a recording unit that records the correction factor data in association with an image picked up by the image pickup unit. 
     
     
         16 . The image pickup apparatus according to  claim 11 ,
 wherein the communication unit obtains correction factor data including a fixed value specific to the interchangeable lens and a variable value varying according to change in state of the interchangeable lens.   
     
     
         17 . A stereoscopic shooting interchangeable lens apparatus comprising:
 a joint unit that allows the stereoscopic shooting interchangeable lens apparatus to be attached/detached to/from a lens mount of a camera main body including an image pickup device;   a stereoscopic image pickup optical system including a plurality of light ray incident surfaces, the stereoscopic image pickup optical system forming a plurality of parallax images having parallax according to positions of the plurality of light ray incident surfaces, on the image pickup device;   a correction parameter storing unit that stores a correction parameter used for electrically correcting an image formed by the stereoscopic image pickup optical system; and   a communication unit that when the joint unit is connected to the lens mount of the camera main body, transmits the correction parameter stored in the storing unit to the camera main body.   
     
     
         18 . The stereoscopic shooting interchangeable lens apparatus according to  claim 17 ,
 wherein the stereoscopic image pickup optical system includes,   when the joint unit is connected to the lens mount of the camera main body, an optical system in which a direction of a line connecting respective principal light rays incident on the respective light ray incident surfaces is in parallel to a direction of arrangement of pixels in the image pickup device.   
     
     
         19 . The stereoscopic shooting interchangeable lens apparatus according to  claim 17 ,
 wherein the stereoscopic image pickup optical system includes:   two light ray incident surfaces;   a first light-guiding optical system including a first reflecting surface and a second reflecting surface that guide a light ray from a subject, the light ray being incident on one of the two light ray incident surfaces, to the image pickup device; and   a second light-guiding optical system including a third reflecting surface and a fourth reflecting surface that guide a light ray from the subject, the light ray being incident on the other of the two light ray incident surfaces, to the image pickup device.   
     
     
         20 . The stereoscopic shooting interchangeable lens apparatus according to  claim 17 ,
 wherein the stereoscopic image pickup optical system includes:   a first objective lens group and a second objective lens group, incident surfaces of which face the subject side, arranged in a parallax direction with a space therebetween, the first objective lens group and the second objective lens group each having negative refractive power; and   a group of image formation lenses arranged collectively or individually nearer to the images than the first and second objective lens groups, the group of image formation lenses having positive refractive power.