Photographic apparatus with selectable photometric optical systems

A photographic apparatus comprising:

• a housing for defining a dark room, said housing having an opening for guiding light incident thereon from a predetermined optical system into said housing;
• a shutter accommodated within said housing and placed in a first light path of the incident light;
• a separator for separating a part of the incident light therefrom;
• a moving mechanism accommodated within said housing and changing a position at which said separator is disposed, said moving mechanism setting said separator to at least one of a first position in the first light path of the incident light between said opening of said housing and said shutter and a second position deviated from the first light path of the incident light;
• and
• a photometric system accommodated within said housing and measuring an illuminance of an image formed by the predetermined optical system by using the separated light from said separator, said photometric system comprising:
• a photosensor for detecting an intensity of the separated light from said photosensor;
• a plurality of photometric optical systems for making the separated light form an image on a light receiving surface of said photosensor, said photometric optical systems having magnifications different from each other;
• and
• a switching mechanism for selectively setting one of said plurality of photometric optical systems into a second light path of the separated light between said separator set to the first position and said light receiving surface of said photosensor.