Red-eye effect
Videos
The red-eye effect in photography is the common appearance of red pupils in color photographs of eyes. It occurs when using a photographic flash at low lighting or at night. When a flash passes throug
A demonstration of red-eye correction
Fill flash
Videos
Fill flash is a photographic technique used to brighten deep shadow areas, typically outdoors on sunny days, though the technique is useful any time the background is significantly brighter than the s
Red-eye effect
…The subject could also be photographed near a bright light source or in sunlight. To lessen the effect, the photographer might alternatively employ the fill flash technique. Cameras with red-eye prevention modes can reduce or eliminate the effect by shining a bright light or firing a number of pre-flashes shortly…
Left: without flash. Right: with fill flash