> Stephen,
> Tell us what film you intend to use and we may be able to
> help you.
>
> Guillermo
>
Guillermo, I'm using Fuji 400 ASA Portra Neg in 120 roll film.
>
> What do you doing that takes such a long exposure? Time lapse in low light?
> Ed Gendron
>
> Nothing special Ed, just availible light night exteriors. But 1 second @ f/2.8 is (just doing this quickly in my so-called head, so I may be off) equals 1500 seconds @ f/135, or 25 minutes. And, yes, I guess I should call my friends @ Kodak tech rep, but I really don't think the motion picture guys will have come across these
> exposure times and the still guys -- with whom I did talk -- just say 'test.'-- which makes sense in general. But a ballpark estimate would sure help when I'm starting with a base exposure of 25 minutes and then adding a recip failure factore of as much as12x. (Pass the No- Doz)
Stephen
This archive was generated by hypermail 2.1.8 : Mon 13 Dec 2004 - 23:33:17 PST