What is each of the camera's reflector and prism?

Reflector is the SLR you can see the piece of mirror as soon as you take down the lens, the main role is to put the lens in front of the image through the reflector to the pentaprism, and then passed to the eyepiece is observing the photographer. When taking pictures, the reflector will be raised, the same shutter curtain will be opened, so that the inside of the film or photoconductor light imaging Pentaprism is a SLR camera framing reflective device, its role is to focus on the screen left and right reversal of the image corrected, so that the framing to see the image and the orientation of the scene seen directly exactly the same, so that the operator can correctly framing and focusing. When the shutter is open, the reflector is turned upward to give way to the light path, and no light is transmitted in the pentaprism.

The pentaprism is usually a solid block of glass cut and ground, and then on the outside (in addition to the focusing screen and the two sides of the eyepieces connected to the viewfinder) are coated with reflective material to form a specular reflection in its interior.