1. what causes eyes to look red in photographs 2. mentions the ways to reduce red eye effect 3. likely 4. its size changes with different light conditions 5. their pupils are smaller then other pupils 6. not 100% sure on this one...I am thinking C....I know it is not B or D 7. Because there is not enough time. 8. it appears red because of the blood vessels in the retina 9. if the camera is farther away, less reflected light is detected
causes of red eye effect : when a flash goes off stays wide open reflects off the retina experience the red eye effect
to reduce red eye effect : in front of the flash from the subject the red eye reduction setting
Summary : the iris does not have enough time to react, so the pupil stay wide open. Light reflects off the retina. Larger pupils are more likely to experience the red eye effect then smaller ones. To reduce the red eye effect, do not stand in front of the flash. You can also move further away and use the red eye reduction setting