PURPOSE: To confirm whether the operation of a shutter is correct or not without obstructing the observation of a finder by displacing a light shielding member between a light shielding position for shielding a lens transmitting light by covering the front of the shutter, and a position shunted from said position.

CONSTITUTION: A light shielding member 13 is driven by arms 15, 16 between a light shielding position for covering the front of a shutter shielding a photographic picture frame 14, and a shunted position shunted from the front of the shutter. A movable image of a finder is observed from an incident surface 5a of a prism, but when the light shielding member 13 is at a light shielding position, a light shielding plate 10 which is supported by a shaft 19 and controls a finder luminous flux is shunted from the incident surface 5a, therefore, the movable image can be observed in the finder, and prior to an exposure, focusing can be executed. When the light shielding member 13 is moved to the shunted position, the light shielding plate 10 covers the incident surface 5a, therefore, the exposure operation can be confirmed without obstructing an observation of an object to be photographed. Accordingly, whether an operation of the shutter is correct or not can be confirmed from the finder.