From: Sandy King (sanking@clemson.edu)
Date: 09/24/03-09:53:18 PM Z
Assuming that you are metering correctly I think that underexposing
by a full stop would be two drastic and would likely result in the
loss of important shadow detail. You gain some effective film speed
by developing for longer than normal, but you won't gain a full stop
with any film/developer combination I know. I advise a more moderate
approach of rating the film at the ASA recommended by the
manufacturer, but developing about 50% longer than would be normal
for printing with silver gelatin papers.
That assumes that you plan to use the negatives for contact printing.
If your goal is to use the in-camera negatives to make enlarged
negatives then just expose and develop normally. When you make the
enlarged negative you can adjust the contrast to the requirements of
the printing process.
Sandy
>
>
>1. I've read that a good starting point for getting
>negs of the right density is to underexpose your film
>by one stop then over develop by 70-100%. Other
>sources say overdevelop and overexpose. Anyone have
>any suggestions on this?
>
>2. As I only have 35mm and 6x6, I ultimately want to
>enlarge my negs, either digitally or via an
>interpositive. I've heard that the best way to do this
>digitally is using a cheap paper and oiling it. Anyone
>have any experience with this? Seems a bit messy to
>me...
>
>3. I've also heard that creating an interpositive can
>lead to all sorts of problems with density and
>contrast. Is there a trick to doing this correctly?
>Having done a lot of work with lith printing, I
>would've thought that exposing the film for the
>"highlights" then developing for "shadow density"
>might help...or am I talking crap?
>
>Thanks!
>
>Rob
>
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