what causes photo red eye
Red-eye effect
It occurs when using a photographic flash very close to the camera lens (as with most compact cameras ), in ambient low light.
Red-eye effect Eye color Light in painting Ultraviolet Bird vision Retina Eye Optics Vision in fish Cataract surgery Adaptation (eye) Cathode-ray tube List of Supernatural characters List of Supernatural and The Winchesters characters Laser safety Melanin Binoculars Macular degeneration History of photographic lens design Human eye Mirror Albinism Infrared Flash (photography) Telescopic sight Human skin color Smartphone Infrared photography Color vision Photographic film Light-emitting diode Glossary of baseball terms Health effects of electronic cigarettes History of the nude in art Visual acuity Night-vision device Digital camera Anaglyph 3D Albinism in humans Fluorescence 3D film Photography Glaucoma Vitamin A The Dresden Files characters Tapetum lucidum List of Doctor Who universe creatures and aliens Lidar Color Image editing Augmented reality Flashtube Hubble Space Telescope List of Garo characters Cinematography OLED Camera Extreme ultraviolet lithography Image scanner Laser pointer Digital photography Green Cooper's hawk Sunglasses Night vision Augustin-Jean Fresnel List of recurring The Simpsons characters Chernobyl disaster Stereoscopy Camouflage Tartan Laser Chromostereopsis Fluorescent lamp Planck's law Facial recognition system Stanley Kubrick Contact lens Sun Intraocular hemorrhage Drosophila melanogaster List of Dutch inventions and innovations Sense Mammalian eye Underwater photography Dark skin Adobe Photoshop Jellyfish Electronic cigarette and e-cigarette liquid marketing Iris (anatomy) Light pollution Guide number Red List of My Hero Academia characters Eye tracking List of Sgt. Frog characters Daguerreotype List of Fables characters Ozone Optical fiber Red-tailed hawk Electromagnetic radiation Blue History of film technology Frog Physical attractiveness Transmission electron microscopy List of Bleach characters Visible spectrum Microscopy Chloroplast Visual system Retinitis pigmentosa Acne Autofocus Cephalopod Betelgeuse Single-lens reflex camera Opsin Horse colic Rollei Joseph Lister Neanderthal Great horned owl The Spirit of the Age Movie projector Development communication Hummingbird Dalek variants White-tailed eagle Institutional racism Camera phone Headlamp X-ray Scuba diving Adobe Lightroom Photographic filter Graphene Human factors in diving equipment design Freeze brand Optical telescope Inkjet printing Star Trek: The Motion Picture Transparent ceramics Black-body radiation Digital single-lens reflex camera Acorn Archimedes Citizen Kane Rainbow History of television Light therapy Blockade of Germany (1939–1945) Underwater vision Radar Biological pigment Science of photography Snowy owl Evidence of common descent South African labour law Ocular albinism type 1 Thin-film solar cell Fovea centralis Optical aberration Television Emergency vehicle lighting Glasses Batsuit List of Touhou Project characters Phacoemulsification List of Pokémon anime characters Recent human evolution Chromatophore List of Monster High characters History of film Astrophotography Interferometry Millennials List of Jimmy Fallon games and sketches History of radar Breastfeeding Superlens Xenon monochloride List of Toriko characters Radiation List of Wild Cards characters Diabetic retinopathy List of The Promised Neverland characters List of Alex Rider characters AI Mark VIII radar Solar cell History of painting Helicon Filter Amphibian Galaxy Red-winged blackbird Nothing Records Tesla Autopilot Radar in World War II Precursors of film Hemoglobin Fundus photography Visual impairment Luftnachrichten Abteilung 350 Imperial Roman army Potential applications of graphene German radio intelligence operations during World War II Odd-eyed cat History of the single-lens reflex camera Electromagnetic spectrum Melanoma Moon landing conspiracy theories Video camera tube Stereo photography techniques RGB color model AI Mark IV radar Lens (vertebrate anatomy) Automotive lighting List of characters in the Breaking Bad franchise European Union law Computer graphics Moon Social media Organic solar cell South African criminal law Television in the United States Photosynthesis Corrective lens Features new to Windows Vista Lemur Solid white (chicken plumage) Gene therapy of the human retina Pupil Dog coat genetics BBC Television Shakespeare History of video games Octopus Image intensifier List of Naruto characters Passive solar building design Particulates List of The Shield characters International Space Station Retinal implant Ethnomusicology Long-eared owl Total internal reflection White horse Iris recognition Kodak Keratoconus Lighting Blueberry (comics) Discrimination based on skin color Methods of detecting exoplanets Depth perception Autostereogram Common ostrich List of Deltora Quest characters Nonverbal communication Physiology of underwater diving Photograph manipulation Remote sensing in geology Logology (science) Perovskite solar cell Underwater diving Eyepiece Effects of nuclear explosions Weather radar Cone cell Touchscreen Lyme disease Characters of the Tekken series PNG United Kingdom labour law Ray McSavaney History of the telescope Electroencephalography Black List of characters in mythology novels by Rick Riordan Networked advocacy Insect morphology 3D printing History of animation Antenna tuner Crocodilia Sediment Profile Imagery White dot syndromes Culture of the United Kingdom Vitamin D History of personal computers Myopia Complete blood count Spacetime Light History of Eglin Air Force Base Charge-coupled device Internet privacy Scanning laser ophthalmoscopy On Vision and Colours List of The Prince of Tennis characters Supernova Special effects of Total Recall (1990 film) Edward Weston Othram Conservation and restoration of paintings History of photography Mammal Perception Wedge-tailed eagle JPEG Adolescence History of computer animation Proto-Cubism Capacitor Loudspeaker Economic history of the United Kingdom Human physiology of underwater diving Batman Induced stem cells NFL on CBS Human brain Iron Cyclops (Marvel Comics) Pinniped Child development Dopamine Duck and cover Color blindness History of the camera F-number Star Heart Lead poisoning List of Assassin's Creed characters Primary color Optical microscope Vacuum tube Galileo project Flashlight LaserDisc Ultraviolet germicidal irradiation Sapphire Barred owl Eye examination Dolphin Functional magnetic resonance imaging Evolution Choroid Vari-Lite 3D scanning Adobe Flash Silviculture Visual arts in Israel Oxygen toxicity It (2017 film) Polarizer Helios List of films considered the worst List of Mad Men characters Bird Spider Star Wars (film) Cat Cuttlefish Well-being contributing factors List of Discworld characters Multispectral optoacoustic tomography Water The Doctor (Doctor Who) Infrared homing Portrait painting Rogue (Marvel Comics) Professional wrestling match types Marine life Atmosphere of Earth Diving rebreather Anti-reflective coating Camera obscura Supercapacitor Contract Chain Home Lens Canon EOS flash system Pulse oximetry Cocaine Privacy concerns with social networking services LASIK Kinect Flash memory Malaria Color coding in data visualization History of Australia Double bass Slavery in ancient Rome Fake news Scott Pilgrim vs. the World Retinoblastoma List of Babylon 5 characters Christopher Evans (outlaw) Alkali metal Android (operating system) The Shining (film) Colloidal gold Economic history of the United States Hearing aid Radiation effects from the Fukushima Daiichi nuclear disaster Miscegenation Metal–organic framework IPhone hardware List of Ikki Tousen characters Zero-point energy Elevator List of Monster Musume characters Hypnosis Beluga whale Lenticular printing Exoplanet List of He-Man and the Masters of the Universe characters School bus US FWS Charles H. Gilbert Magical objects in Harry Potter Brown dwarf Forests Commission Victoria Native Americans in the United States Reindeer Film Reading Chromatic aberration Macular telangiectasia Antenna (radio) Purple Light skin Camcorder List of Agents of S.H.I.E.L.D. characters Brain Evil eye Zebrafish Weather of 2010 Industrial Revolution Stage lighting instrument Blackface Aircraft in fiction Lepidoptera Avatar (2009 film) Optical disc drive Climate change Rebreather diving Accommodation (vertebrate eye) Visual perception Henry VI, Part 3 Red imported fire ant Brain–computer interface South African contract law Atmospheric optics Clavier-Übung III Cattle Photographic lens design Multi-exposure HDR capture Generation Z in the United States Political positions of Hillary Clinton Super-resolution microscopy Clitoris White Field electron emission Subprime mortgage crisis Cleavage (breasts) Marine salvage Comparison of user features of messaging platforms Cro-Magnon Physiological effects in space Titus Andronicus History of Cumbria List of accidents and incidents involving military aircraft (1955–1959) History of opera Breathing apparatus Reptile Sunscreen Potential applications of carbon nanotubes List of Panasonic camcorders Steam locomotive Heterochromia iridum Non-line-of-sight propagation Characters of the Street Fighter series List of Arrested Development characters Passenger pigeon Floater List of One Piece characters Color motion picture film Photodynamic therapy Transparency and translucency Diamond The Exorcist Onychophora YouTube Pre-Code Hollywood Features new to Windows XP Cyanobacteria List of Regular Show characters Neuroscience of sleep Cultural impact of Madonna Ichthyosauria James Webb Space Telescope History of science and technology in Africa Lead Nintendo 3DS French Resistance Ixodes holocyclus Structural coloration Artificial intelligence Nuclear weapon design Optical filter Lysergic acid diethylamide List of Negima! Magister Negi Magi characters Liquid crystal Vilnius Vagina Macro photography American frontier Racism in the United States Optical coating Sutton Hoo helmet Sea Eurasian goshawk Painting List of Black Clover characters Cataract New Deal Psycho (1960 film) Silver nanoparticle HSL and HSV List of Star Wars creatures History of science and technology in Japan Astronomy Observance of Christmas by country Diving safety Reflective surfaces (climate engineering) Expectancy violations theory Color psychology Technicolor Windows 10 List of Code Geass characters Animal coloration Maritime history of California Microwave oven Maximilian I, Holy Roman Emperor Portrait photography History of electromagnetic theory Bioluminescence Funkabwehr Chromium Apple Inc. Hulk Aerial photographic and satellite image interpretation Assassination of José Calvo Sotelo Atmosphere of Jupiter Seven (1995 film) Søren Kierkegaard Water on Mars Refractive index Circadian rhythm Polarization (waves) View camera Coyote Rajput painting Virtual reality Spirit photography List of A Series of Unfortunate Events characters Firefox version history Shroud of Turin History of women in the United States Glossary of motorsport terms Misumena vatia Ural owl Nuclear winter List of Power Rangers Mystic Force characters History of medicine American Beauty (1999 film) Traffic light Central serous chorioretinopathy Ingrid Bergman Fish physiology Raman spectroscopy Pornography List of accidents and incidents involving military aircraft (1960–1969) Contax Mikhail Vrubel Animal testing American cuisine Passive daytime radiative cooling High-speed photography Ray tracing (graphics) Melanopsin List of Date A Live characters Microwave Raw image format Sheep Sunlight Evolutionary psychology Film speed Halt and Catch Fire (TV series) Permian–Triassic extinction event Fresnel lens Yellow African humid period List of The Hitchhiker's Guide to the Galaxy characters New Horizons Nutritional neuroscience List of Little Britain characters Mantis shrimp Wildfire List of Shaman King characters Image sensor format Specimens of Archaeopteryx Electro-optical MASINT David Bowie Quantum dot Royal Commission on Animal Magnetism Bates method Dye-sensitized solar cell Air pollution Responses to the COVID-19 pandemic in April 2020 Western African Ebola virus epidemic External ballistics Demining List of Beelzebub characters List of angels in Supernatural List of recurring Orange Is the New Black characters List of The Idolmaster characters Steppe eagle Fish anatomy Snake Nerve guidance conduit List of Spider-Man (1994 TV series) characters Color model Hugo W. Koehler Scanning electron microscope Biofeedback Lens (anatomy) Synthetic-aperture radar Nikon F2 Zinc Augmentative and alternative communication Job interview Rodent Amelanism Hasselblad Conservation and restoration of photographs List of Star Wars species (P–T) Laser hair removal Cloud Grow light Milky Way Women in Islam Cactus Instagram Ocular albinism late onset sensorineural deafness Genie (feral child) Traditional animation 35 mm movie film Vaccine hesitancy Childbirth Apple Watch Wikipedia United Kingdom constitutional law Historic paint analysis Animal cognition Characters of Casualty Dust astronomy Tawny eagle Champagne gene Henry VI, Part 1 Technological and industrial history of 20th-century Canada Nazi racial theories Computer mouse Paris in the 18th century Aurora Red hair List of villains in VR Troopers Sculpture Landscape photography Value-form Feminine beauty ideal Color temperature Human nutrition Whale Optical transfer function Liquid-crystal display Venom (character) Gasoline Late Roman army Virginia Woolf Armies in the American Civil War History of printing Health effects of Bisphenol A List of Late Night with Conan O'Brien sketches Obstructive sleep apnea Nintendo Switch The Thing (1982 film) Traumatic brain injury Criminal procedure in South Africa Linguistic development of Genie Extraterrestrial sky National Ignition Facility Greenhouse effect List of Di-Gata Defenders characters The Batman (film) Pentax cameras Marginal zone B-cell lymphoma England List of alien races in Marvel Comics List of Friday the 13th characters List of video games notable for negative reception Ozone depletion The Blitz Chemotherapy Stroke Skeletal muscle Color analysis (art) Theory of mind Persecution of Christians Color television Aperture Violet (color) Quantitative genetics Sixth Labour Government of New Zealand Embodied cognition Multi-junction solar cell Timeline of United States inventions (1946–1991) Index of motion picture–related articles Ovarian cancer Role of Christianity in civilization Mohammad Reza Pahlavi Archaeo-optics List of Pandora Hearts characters Zinc oxide Climate change in Washington Baleen whale Retinol Phase-contrast X-ray imaging Human skin Pleiotropy Coats' disease Multisensory integration History of the United States Pterosaur Wales Exploration of Io Titan (moon) History of chemistry Tilt–shift photography Hindenburg disaster Windows Vista List of video game genres Eyewitness memory Sexuality in ancient Rome Geographic information system Detribalization History of gunpowder Evolution of color vision in primates Murine respirovirus List of The Great Food Truck Race episodes Intrinsically photosensitive retinal ganglion cell Mihai Olos North Pacific right whale Focal-plane shutter Slit lamp Cat coat genetics History of tattooing Interstellar medium Anglo-Saxons Aerial firefighting and forestry in southern Australia Horse Dry suit Kizil Caves Srebrenica massacre Copper in biology Rhinoplasty Chronology of the universe Emakimono Smile (The Beach Boys album) Graphics display resolution Laser beam profiler Identity document Soil List of The Seven Deadly Sins characters Bondelswarts Rebellion Laser engraving List of built-in macOS apps Optical flat Wireless power transfer Dactyloidae Fracking in the United States Leukoplakia Retroreflector Microplastics Consciousness Cannabis cultivation Thracian religion Coral reef Photoreceptor cell Solar eclipse Protoceratops Intraocular lens Springfield race riot of 1908 Oddworld Inhabitants Compact fluorescent lamp Photomultiplier tube Ocean color Inattentional blindness School uniforms by country Smallpox Iran–Iraq War IOS List of Twilight characters Dubbing Holography International Ultraviolet Explorer Lightning H. H. Asquith Israeli occupation of the West Bank Women in science Havana Critical period List of dangerous snakes MRI artifact Michael Heseltine Intel Laser diode Dog health Early Netherlandish painting Anne de Montmorency, 1st Duke of Montmorency Addiction Panoramic photography Scythians Automatic number-plate recognition Characters of Xenosaga Shark Oculocutaneous albinism type I The Idler (1758–1760) Rocket engine Human cannibalism Aggression Cigarette Characters of Shakespear's Plays Cream gene BDSM Ocean acidification Impact of the COVID-19 pandemic on the arts and cultural heritage Loch Ness Monster Narcissus (plant) It (miniseries) Fourier optics Dinosaur Comparison of the AK-47 and M16 Fourier-transform infrared spectroscopy Film capacitor Instant film History of the United Kingdom Glossary of jazz and popular music Alien (film) Riau Islands AMC Hornet Ant Black hole Internet of things Foreign internal defense Characters of the DC Extended Universe Text messaging Ice drilling Flower Tod Browning Cluedo (Australian game show) Projection screen Thorium Panasonic Lumix DMC-GH1 Luis Cernuda Marriage Geographic atrophy List of Lilo & Stitch characters Human hair color Medicine in the medieval Islamic world Presidency of Donald Trump Artillery Electromagnetic radiation and health Robotics Flint water crisis Racial achievement gap in the United States Firefly squid Sperm whale Incandescent light bulb K-pop Strip club Origin of language List of Hunter × Hunter characters Entertainment List of Saw characters List of Dexter characters Prosthesis Truck driver CIE 1931 color space Intraocular lens power calculation List of Dragon Ball characters Goodbye to Language Roger Ballen Supermarine Spitfire operational history Civil rights movement Rafael Viñoly Blue–green distinction in language Face masks during the COVID-19 pandemic Diving regulator Shotgun 2000s Pictorialism HBO Mexican art M60 tank Lockheed U-2 List of Yo-kai Watch characters Hyperspectral imaging Equine vision On the Origin of Species Race (human categorization) Concrete Culture and menstruation Marine plastic pollution Atmosphere of Venus Solid-state drive United Kingdom–United States relations Thermal radiation List of Merlin characters List of Castlevania characters Nepenthes rajah Stealth technology M16 rifle Chiapas Silver Camera lens Chevrolet Camaro (fifth generation) Strabismus Ottoman architecture Professional wrestling Urban forestry Conditional preservation of the saints World of A Song of Ice and Fire Ansel Adams Birdman (film) Particle image velocimetry Silicon Medical ultrasound Sound film Dingo Chroma key Police brutality by country List of Avatar: The Last Airbender characters Deep learning Dry eye syndrome Domestic violence Sgt. Pepper's Lonely Hearts Club Band GoPro Pokémon List of Shameless (British TV series) characters Bateleur Literacy Mechanism of diving regulators Ulcerative colitis LSD Norman Osborn Photojournalism Alfred Waterhouse Metamaterial cloaking Norrie disease Photolithography Ultraviolet photography De Havilland Mosquito Harmful algal bloom IMAX Killing of Osama bin Laden Daniel H. Overmyer Keyboard layout List of Attack on Titan characters Dragon (Dungeons & Dragons) Humidity Advertising management Albedo List of Chrome Shelled Regios characters Fish Atomic bombings of Hiroshima and Nagasaki Thermography Erwin Rommel List of NCIS characters List of Mega Man characters HPV-positive oropharyngeal cancer Mercury (planet) Donyale Luna List of Medaka Box characters Decompression theory Genetically modified food controversies Retford Red light camera List of Google April Fools' Day jokes