Reflect light shutter and its viewfinding system

The utility model discloses a reflective shutter and the framing system of the reflecting shutter, belonging to the technical field of photographic equipment. The utility model overcomes the defect that every time following a pressure on the shutter, the reflector of the present framing system overturns upwards to cause the insufficiency of acoustic feedback. The shutter of the utility model comprises a first curtain assembled by a plurality of metal sheets and nonmetal sheets, and the framing system comprises a main reflector, a collector lens, an M-shaped phase prism, a reflector and a framing eyepiece. The utility model is characterized in that the surface of the first curtain of the shutter facing to the camera lens forms a mirror plane; the angle between the shutter and the focal plane is from 20 DEG to 45 DEG; the shutter can simultaneously be taken as a main reflector. The utility model can be taken as framing and light penetration unit, and has the advantages of small shoot shake and fast light penetration speed of shutter.