초록 ▼

An automatic focus adjustment camera in which a photo-taking lens is step-driven to one of a plurality of set positions, depending upon measurement of object distance, employs aperture adjustment or adjustment of object distance to improve resolution of images. The total focusing distance range of t

An automatic focus adjustment camera in which a photo-taking lens is step-driven to one of a plurality of set positions, depending upon measurement of object distance, employs aperture adjustment or adjustment of object distance to improve resolution of images. The total focusing distance range of the photo-taking lens is divided into successive object distance ranges, and the center of each object distance range corresponds to one of the set positions of the photo-taking lens. The amount of adjustment to improve resolution is determined by the extent to which the measured object distance differs from the center of the object distance range that includes the measured object distance. In a portrait photography mode the aperture diameter is made large enough to ensure blurring of background while obtaining a sharp object image.

대표청구항 ▼

An automatic focus adjustment camera including a device for measuring distance to an object to be photographed and a photo-taking optical system having an adjustable aperture and a focusing lens that is driven, depending upon measured object distance, to one of a plurality of predetermined set posit

An automatic focus adjustment camera including a device for measuring distance to an object to be photographed and a photo-taking optical system having an adjustable aperture and a focusing lens that is driven, depending upon measured object distance, to one of a plurality of predetermined set positions associated with predetermined object distance ranges, the camera comprising means, dependent upon the difference between a measured object distance and an object distance corresponding to the set position in an object distance range that includes the measured object distance, for determining the extent to which the aperture or the object distance should be adjusted in order to provide desired resolution of an image of the object produced by the photo-taking optical system.