Why might individuals with lighter irises show more red-eye

Apr 2, 2023 ... Red-eye is less about eye colour and more about only happening only when your eyes are pointed directly at the camera. The "red eye" is the ... Mar 7, 2017 ... What causes the Red-Eye Effect in flash photography? ... When you are in a dark room, your pupils are dilated (enlarged) to let in more light to ... The red eye effect happens when flash pictures are taken in low-light situations. When the flash is located close to the camera lens (as it is in most cameras), Dec 21, 2016 ... Red eye occurs when the light from an electronic flash strikes the retina and reflects back to the camera lens. Nov 23, 2012 ... The red eye is caused by the light from the flash reflecting off the tapetum lucidum behind the retina directly back at the camera. The tapetum ... Apr 1, 2024 ... Close-up of a man's red bloodshot eyes. hadkhanong_Thailand/iStock via Getty Images. A red eye might look scary and cause discomfort. But the ... Its efficiency changes based on many causes, including lighting conditions, topic and camera angle. Understanding what causes red eye effect is a good first. The "red eye" mode of cameras involves a pre-flash before the main flash so that pupils become smaller before the real picture is taken and red eyes are ... Jul 20, 2015 ... Choroid contains a rich amount of blood, so in a dark room, the light from the camera flash reflects off the red blood vessels of the choroid ... Apr 1, 2025 ... Red eyes in photos, a frequent nuisance caused by flash photography, can detract from the most memorable moments captured on camera.