What are the mirrors and prisms of the camera?
When photographing, the mirror will be lifted, with the shutter will be open, so that the inside of the film or photosensitive element by optical imaging of five prism SLR camera viewfinder is reflective device, its role is to image on the screen on the left and right reversed corrected, see the viewfinder image and the scene directly see the complete range consistent, so that the operator can correctly view and focus. When the shutter is switched on, the mirror turns upward to make the light path light, and the five prism is opaque.
A reflector is the mirror that you can see when you take a lens down. The main function is to hit the image in front of the lens through the mirror onto the five prism, and then pass it to the photographer who is looking at the eyepiece.
The five prism is usually a solid piece of glass that is cut and ground and then plated with reflective material on its surface (except for the two faces attached to the focus screen and the viewfinder eyepiece) to form a mirror reflection inside.
