Rules
Terms of Use

Topic Options
#12690 - Wed Aug 02 2000 08:16 AM Red eye
Jabberwock Offline
Prolific

Registered: Sat Apr 29 2000
Posts: 1173
Loc: Vancouver Canada
What causes photos of people to sometimes have red eyes?

Top
#12691 - Wed Aug 02 2000 09:17 AM Re: Red eye
gtho4 Offline
Administrator

Registered: Sun Dec 26 1999
Posts: 54492
Loc: Sydney
oz downunder
from www.channel1.com/workingphotos/flash_redeye.html
quote:
"Red Eye" is a vexing problem with an interesting cause: Subjects' eyes glow red when light reflects off the blood-rich retinas at the backs of their eyes. The problem is most common in flash phototographs for two reasons.

First, most flash pictures are taken in relative darkness, when people's pupils dialate (open wide) to let in more light. The wide pupils also allow more light to reflect back out to the camera.

Second, flashes, particularly on small cameras, are often very close to the camera lens. The light from the flash that hits the subjects' eyes reflects straight back to the lens. When the flash is farther from the lens, the reflection from the eyes doesn't hit the lens.



Top
#12692 - Wed Aug 02 2000 10:22 PM Re: Red eye
TexasJoe Offline
Multiloquent

Registered: Tue Oct 05 1999
Posts: 3171
Loc: Plano, Texas
Good one GTO4!

About 6 Bud's or 3 Foster's will do it for me....

_________________________
In The Neighborhood? houseofproctor.com .. Say Hello!
~~~ A Journey To A Thousand Websites Begins With The First Click ~~~

Top

Moderator:  TabbyTom