🚀 go-pugleaf

Bethany--
   Red-eye is caused by light from the camera's flash being reflected from
the retina of the subject back into the camera lens.  The film quality has
no effect except maybe in the color rendition.  There are several ways to
avoid red-eye.  One is not to use a flash, but that's not always possible.
(Red-eye could be caused by any bright light that can be reflected into
the lens.  Since the retina tends to act like a "retroreflector", it's
only a problem if the bright light is near the eye-lens axis."  Another
way to avoid redeye if flash must be used is to move the flash away from
the eye-lens axis.  This is why professional photographers always have the
flash positioned to the side or above the subject being photographed.
Some "snapshot" cameras also put the flash on a "stalk" that raises the
source of the light well above the eye-lens axis.  A new technique used
on some cameras with the flash permanently mounted near the lens is to
have the flash give off several short pulses of light just before the
actual photograph is taken.  This doesn't eliminate redeye, but it reduces
the effect by causing the subjects' pupils to shrink.
   I hope this helps.  Good luck with your project.

Steve Luzader
Frostburg State University
sluzader@fre.fsu.umd.edu