🚀 go-pugleaf

I am not a life sciences person and maybe you should check
on one of the bio listserv's as well.  I have done alot of
photography and have a theory that red eye is the reflection
of the flash on the retina.  The best way to get rid of red-eye
is to move the flash bulb away from the camera lens.  Since
the back of the eye is spherical the light will bounce back
to the flash.  If the flash is close to the camera lens, the
light will reflect back to the lens as well.  The result,
red-eye.  One shot type cameras with the flash and the lens
mounted close together should give the worst red-eye.  I would
wonder where on the retina is the most reflective surface?
Steve



>
> I am a 7th grade student doing a science project on what causes
> red-eye in photography and how to avoid it. If anyone can help me answer
> these questions, I'd be very grateful:
> -Does quality of film, film speed, and/or quality of camera have an
> effecct on red-eye?
> -When doing my experiment, how long should the subject rest
> in between two pictures so that the pupil return to normal size?
> -What exactly causes red-eye?
> -Could you reccomend any good reading on this subject?
>                +-+-+-+-+-+-+-+-+-+-+-+
>              Joseph F. McLaughlin, Physics
>    Brentwood High School,  Brentwood (Pittsburgh), PA
> johnmcl+@pitt.edu (Pitt got it wrong- it's Joe, not John!)
>            (formerly jxm39@psuvm.psu.edu)

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