[Tfug] Way OT: optics mumbo jumbo

jblais joe.blais at pti-instruments.com
Tue Mar 25 14:03:07 MST 2008


Hello -


> > >Often, my solution is to back away from the item
> > >(light falls off as the square -- or cube? -- of
> > >the distance) until the reflections are manageable.
> >
> > Inverse 4th power (x^(-4)), because the light makes
> > a round trip
> > from a light-dispersing object.
>


Well -- I think the exposure setting for the camera taking a picture of an
object, only depends on the distance of the light source to the subject.
The camera can be anywhere, so it's really just the inverse-squared law.


Joe





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