From: Guide Dept @ Stouffer Graphics (@)
Date: 10/28/02-10:37:40 AM Z
We have had great success achieving a density range of 3.0 with Ilford Ortho
Plus. Also, depending on what developer is used a Dmax of approximately 3.75
to 3.90 is possible. Ilfotec HC developer will produce a Dmax range of 2.75
to 3.0 and Ilford Phenisol will produce the higher Dmax range of 3.75 to
3.90. However, we are using the Ilford Ortho to make step wedges and not for
normal photographic uses.
Don't know if that info will help or not but thought I'd throw in my 2cents
worth.
Kevin Morris
Stouffer Industries
----- Original Message -----
From: Monnoyer Philippe <monnoyer@imec.be>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Monday, October 28, 2002 11:23 AM
Subject: ortho film and halftone
>
> Could anyone on the list show that a density range of 2.0 or more is
achievable on ortho film (with LC-1 or whatever low contrast diluted
developper), that with a full tonal range between fog and d-max.
> My feeling is that those of you who are talking about halftones have
indeed halftones, but with a shorter range than on normal halftone film.
Such a shorter range is therefore of no help for Pd or Pt/Pd.
> That's why I asked if anybody had DlogE curves for such processing of
ortho films.
> If the curve slope is steep, one is not able to expose that film with an
halftone original and keep all its values in the resulting interpositive.
>
> So ? Any input ?
>
> Thanks,
>
> Philippe,
> Belgium
>
>
This archive was generated by hypermail 2.1.5 : 11/14/02-02:40:27 PM Z CST