Exposure control apparatus for camera provided with multi metering device

Claim 2

An exposure control apparatus for a camera comprising: (a) a metering circuit for metering the field of an object while dividing said field into a plural number of sections to generate a plural number of photoelectric outputs corresponding to said sections respectively; (b) an exposure operational circuit for calculating an exposure value from said photoelectric outputs; (c) a correction value calculating circuit for calculating correction values corresponding to said sections of the object field respectively to correct the distribution characteristics of said photoelectric outputs relative to the distribution characteristics of illumination on the focal plane of the photographing lens of the camera at the time of photographing; and (d) a correction operational circuit for correcting said individual photoelectric outputs in accordance with the calculated correction values.

Claim 3

An exposure control apparatus according to claim 1 which further comprises means for generating information relating to the photographing lens and wherein said correction value calculating circuit calculates said correction values relying upon said information from said information generating means.

Claim 4

An exposure control apparatus according to claim 2 wherein said information generating means includes information setting means engageable with the photographing lens and generates at least one information selected from the group consisting of information of fully open aperture value of said photographing lens, information of aperture value controlled at the time of photographing, information of the difference between said open aperture value and said controlled aperture value, information of focal length of said photographing lens and information of exit pupil distance of said photographing lens.

Claim 5

An exposure control apparatus according to claim 1 wherein said correction value calculating circuit receives the output from said exposure operational circuit and calculates said correction values from said exposure value.

Claim 6

An exposure control apparatus according to claim 4 which further comprises means for setting shutter speed and wherein said exposure operational circuit calculates from the shutter speed set by said means an aperture value to be controlled for obtaining a proper exposure and issues said calculated aperture value to said correction value calculating circuit.

Claim 7

An exposure control apparatus according to claim 5 which further comprises means for detecting the open aperture value of said photographing lens and wherein said exposure operational circuit issues an output indicative of the difference between said calculated aperture value and said open aperture value.

Claim 8

An exposure control apparatus according to claim 1 wherein said correction value calculating circuit includes a circuit making for a plural number of different correction signals related to the respective locations allotted for said respective sections within said object field.

Claim 9

An exposure control apparatus according to claim 7 wherein said correction operational circuit includes a circuit for causing said correction signals to correspond to said photoelectric outputs respectively.

Claim 10

An exposure control apparatus according to claim 7 wherein said correction value calculating circuit includes a circuit for calculating the same correction value for those sections which are located symmetrical with respect to each other within said object field. .Iadd.

Claim 11

In a camera provided with a photographing lens, an apparatus for determining a proper exposure for an object field to be photographed comprising: (a) metering means for metering the object field while dividing said field into a plural number of sections to generate a plural number of photoelectric outputs corresponding to said sections respectively; (b) means for producing correction values corresponding to said sections of the object field respectively to correct the distribution characteristics of said photo-electric outputs relative to the distribution characteristics of illumination on the focal plane of the photographing lens of the camera at the time of photographing; (c) correction operational means for correcting said individual photoelectric outputs in accordance with the correction values; and (d) exposure operational means for determining an exposure value from said photoelectric outputs corrected by said correction operational means..Iaddend. .Iadd.

Claim 12

In a camera provided with a photographing lens, an apparatus for determining a proper exposure for an object field to be photographed comprising: (a) metering means for metering the object field while dividing said field into a plural number of sections to generate a plural number of photoelectric outputs corresponding to said sections respectively; (b) means for producing correction values corresponding to said sections of the object field respectively to correct the distribution characteristics of said photo-electric outputs relative to the distribution characteristics of illumination on the focal plane of the photographing lens of the camera at the time of photographing; (c) correction operational means for correcting said individual photoelectric outputs in accordance with the correction values; and (d) exposure operational means for determining an exposure value from said photoelectric outputs corrected by said correction operational means..Iaddend. .Iadd.

Claim 13

An apparatus according to claim 10 which further comprises means for generating information relating to the photographing lens and wherein said correction value producing means produces said correction values relying upon said information from said information generating means..Iaddend. .Iadd.12. An apparatus according to claim 11, wherein said information generating means includes information setting means engageable with the photographing lens and generates at least one information selected from the group consisting of information of a fully open aperture value of said photographing lens, information of an aperture value controlled at the time of photographing, information of the difference between said open aperture value and said controlled aperture value, information of a focal length of said photographing lens and information of an exit pupil distance of said photographing lens..Iaddend. .Iadd.13. An apparatus according to claim 10, wherein said correction value producing means receives the output from said exposure operational means and produces said correction values from said exposure value..Iaddend. .Iadd.14. An apparatus according to claim 13 which further comprises means for setting shutter speed and wherein said exposure operational means determines from the shutter speed set by said means an aperture value to be controlled for obtaining said proper exposure and issues said determined aperture value to said correction value producing means..Iaddend. .Iadd.15. An apparatus according to claim 14 which further comprises means for detecting the open aperture value of said photographing lens and wherein said exposure operational means issues an output indicative of the difference between said determined aperture value and said open aperture value..Iaddend. .Iadd.16. An apparatus according to claim 10, wherein said correction value producing means includes means for making a plural number of different correction signals related to the respective locations allotted for said respective sections within said object field..Iaddend. .Iadd.17. An apparatus according to claim 16, wherein said correction operational means includes means for causing said correction signals to correspond to said photoelectric outputs respectively..Iaddend. .Iadd.18. An apparatus according to claim 16, wherein said correction value producing means includes means for producing the same correction value for those sections which are located symmetrical with respect to each other within said object field..Iaddend. .Iadd.19. An apparatus according to claim 10, wherein said camera comprises means for controlling an exposure in accordance with said exposure value determined by said exposure value determined by said exposure operational means..Iaddend. .Iadd.20. An apparatus according to claim 10, wherein said camera comprises means for indicating information relating to an exposure in accordance with said exposure value determined by said exposure operational means..Iaddend.