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Re: [OM] Red-eye [was: Macro flash survey]

Subject: Re: [OM] Red-eye [was: Macro flash survey]
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
Date: Wed, 14 Aug 2002 20:06:50 -0500
At 15:20 8/14/02, dan wrote:
 Does anyone know what the "angle of red-eye" is for human eyes? In other
words, how much distance do you need between the lens and the flash before
you won't get red-eye any more. As far as I can tell, this depends on the
distance between the camera and the eye as well, so it's an angle rather
than an absolute distance, right?

And it's a variable angle as well. It's affected by the direction the person is looking in addition to how dilated the pupil(s) are. The worst situation for red-eye I've experienced is late in the evening at wedding receptions. This is after the lights have been turned down as far as possible for intimate dancing and after people have been imbibing alcoholic beverages for a while. Both the extremely dim lighting and the alcohol can dilate people's pupils until there is near zero iris left visible.

-- John


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