Red eye has long been the bane of photographers. How many times have we photographed our friends and family in a variety of social scenarios, and the flash photography leaves our pictures of people looking like demons!
Red-eye occurs when your camera uses a burst of flash to capture a decent exposure. In low-light conditions our pupils open wide so that we can see more clearly. This means that a sudden influx of light from the camera will illuminate the eyes’ interior, bouncing off the blood vessels on our retinas – and adding a sinister red glow to our subject’s eyes.