Re: Digital Carbon Negatives

From: Ryuji Suzuki ^lt;>
Date: 03/07/04-09:59:27 PM Z
Message-id: <>

From: Sandy King <>
Subject: RE: Digital Carbon Negatives
Date: Sun, 07 Mar 2004 19:58:17 -0500

> 2. Many people are using films that are less than ideal for
> alternative printing because they have such a high rise in B+F from
> the longer development times we must give them to get enough
> contrast. Films like BPF and HP5+ are good examples. And of course,
> as I noted above, an increase of 0.15 for a traditional negatives
> becomes an effective increase of 0.30 to 0.45 for a stained negative.
> What to do?

Why don't people use antifoggant like 1-phenyl-5-mercaptotetrazole or
one of benzotriazoles? I suggest PMT in 3-10% of phenidone by weight,
or benzotriazole in 50-100% (same) as a starting point. You can use
KBr as well.

> 4. If you must shoot films like BPF and HP5+ in very flat lighting I
> would recommend that you either develop the film in a Pyro developer
> that does not produce a lot of stain, ABC Pyro at the 1:1:1:7
> dilution for example, or use a very high energy developer like Kodak
> D19, which you will have to mix from scratch.

If highest contrast is desired, D-11 is probably a better choice than
D-19. You can still buy D-19 in a bag (at least last when I checked)
but you have to mix D-11 from bulk chemicals. These developers contain
KBr and fog increase with these developer should be pretty minimal.

Ryuji Suzuki
"All the truth in the world adds up to one big lie." (Bob Dylan 2000)
Received on Sun Mar 7 21:59:35 2004

This archive was generated by hypermail 2.1.8 : 04/01/04-02:02:04 PM Z CST