Photographic apparatus with selectable photometric optical systems

摘要

The present invention relates to a photographic apparatus comprising a photometric system which can tolerate a wide range of change in contrast. This photographic apparatus attains, at least, a state in which an image from an optical instrument such as microscope can be photographed and a state in which the light intensity of the image formed by the optical instrument can be measured by the photometric system utilizing a light separated from incident light. This photometric system comprises a plurality of optical systems respectively having magnifications different from each other and a photosensor having a light receiving surface defined by a plurality of light intensity detectors, wherein these plurality of optical systems and plurality of detectors are intentionally selected so as to change the range of measurement of an image formed on the light receiving surface of the photosensor.