Why do sometime eyes appear red in photograph?

Answer 1

The flash is the problem. The eye's retina contains a crisscross of red blood vessels. Sometimes, when the light from a camera flash reflects off the retina it bounces back to the camera lens carrying a red tint from the blood vessels and from a brownish pigment in a few layers of the retina.

Answer 2

Your Camera

Instructions

STEP 1: Attach a flash gun or detachable flash to the camera with a flash cable that connects to the front of most 35 mm cameras through a small socket.
STEP 2: Set the shutter speed of a manual camera to 1/60 second using the shutter speed dial on the top-left side of the camera.
STEP 3: Set an automatic camera to flash mode and attach a flash gun to the socket on the front of the camera.
STEP 4: Hold the flash gun a couple of feet to one side of the camera and slightly above the subject's head.
STEP 5: Press the shutter release on top of the camera.
Tips & Warnings

Many cameras with built-in flashes feature a low-powered pre-flash that helps reduce the incidence of red eye.
Bounce the flash off surroundings by aiming the flash gun at the ceiling or a wall for softer, more diffused lighting.
Use an adjustable flash that can be pointed at an angle.
Your Subjects

Instructions

STEP 1: Turn on the lights in the room so that your subjects' pupils will decrease in size.
STEP 2: Ask them to look to the side of your camera rather than straight at the camera when you snap the picture.
STEP 3: Divert babies or pets so that they look away from the camera.
Tips & Warnings

"Red eye" is caused by flash lighting reflecting off the back of the retina.

Answer 3

When you typically use the flash it's because the room is dark right? Well since the room is dark your pupils are wide open. The flash from the camera will enter the eye reflect off the the back of the eye that has many blood filled capilaries and back to the lense of the camera before the eye has a chance to close down its pupil. That's why cameras the have a red eye reduction setting will flash a couple of times before taking a picture. The camera is flashing a bright light at the subject to alow the pupil to close so when the picture is then taken your pupils are closed and red eye is reduced.

Answer 4

The bright light of a flash causes the eye's iris to open wide. The ligth entering the sys then reflects on the back of the retina taking colour from the light passing through blood vessels and therefore making it look like you have red eyes. Cats eyes have reflecting cells on the retina which do a similar thing.

Answer 5

It's called red eye. When a camera has a bright flash, the retina on the back of people's eyeballs will reflect the flash. Since the retina is full of blood vessels, it makes eyes look red in photos.

Answer 6

regrettably, nonetheless there are hundreds of theories surrounding what motives purple eye, none of them have been one hundred% shown. some have been approximately 95% precise yet it is all the added. attempt to no longer use an on digicam flash. If conceivable, use an exterior flash fixed above the hotshoe of the digicam. this would shop the flash from entering into at as quickly as into the retina of the attention and bouncing lower back at you. Animals eyes are very soft to easy (that's why they glow so certainly at evening) and could replicate the slightest hint of light.

Answer 7

The blood vessels in the eyes are reflecting off the flash.

Answer 8

Aah... I just read on this article awhile ago. This is because one's iris tries to adapt to the flashing light of one's camera. They do that in order to "regenerate" destroyed cells which have been destroyed by the flash. In order to prevent that, certain cameras have this method where you have a choice of reducing red-eye.

Answer 9

angry in inner columns
may be the reflection of rest/sleep lessness also
or flashing defects

Answer 10

mostly happens to people with a cat eye