Print A positive picture, usually on paper, and usually produced from a negative. See also Slide . Program Exposure A mode on automatic cameras that automatically sets both the aperture and the shutter speed. See also Aperture , Shutter Speed . Prop An object used or held by a subject in a photograph.
Props can set a mood or help define the subject's personality.
R Rangefinder A device included on many cameras as an aid in focusing. See also Viewfinder, Parallax Error . The appearance of deep red dots in the eyes of human and animal photographic subjects. Redeye is is caused by the flash reflecting off the retina in their eyes. The pre-flash causes the subjects' pupils to contract, reducing the visible retina and thus the posibility of light reflecting from it.