On Monday, July 14, 2003 at 2:31
John A. Lind <olympus@xxxxxxxxxxxxxxx> wrote:
> At 10:34 PM 7/12/03, Johnnie wrote:
> >All images were shot with a -4T, on Provia 100F at f11.
>
> [snip]
>
> >The images seem to lean toward the red spectrum. I seem to recall the
> >show having a lot more blue and green that I captured. My guess is
> >that those colors weren't bright enough to show up well on the image.
> >Would the lenght of the exposure make the images go red?
>
> Johnnie,
> The exposure time you used shouldn't have resulted in any color shift, at
> least due to using long exposures. According to Fuji's data sheet for
> Provia 100F, reciprocity failure doesn't kick in until exposure time
> exceeds 128 seconds. At four minutes, Fuji recommends a specific "green"
> filter and adding 1/3rd stop compensation.
The exposure time depends on the time the light lasts. Even in a 1-hour
exposure, each bright trail would last only 2-5 seconds.
For capturing meteors, a film with a lot of reciprocity failure is preferred to
keep the sky dark!
tOM---- Abacurial Information Management Consultants ----
Tom A. Trottier, President http://abacurial.com
758 Albert St, Ottawa ON Canada K1R 7V8
N45.412 W75.714 +1 613 860-6633 fax:+1-270-596-1042
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