From: Scott Wainer (smwbmp@starpower.net)
Date: 04/11/03-10:46:00 PM Z
I have done medium format pinholes from time to time; though I haven't used
Arista films for them. I did have the same problem with flat, low speed
negatives using Ilford Delta 100 and 400 developed in D-76 diluted 1:1. I
found that I was not accounting for reciproicity failure in my exposures.
With the extra exposure and a reduction in development, I got negatives with
more "punch" and that printed well on grade 1 silver gelatin paper. I am in
the process of making enlarged negatives of them using Liams reversal
process so I can print them as kallitypes and cyanotypes.
I have also been testing medium format Arista Pro 400 developed in FX-37 and
found that my personal EI is between 250 and 320. From what I have seen so
far, my bet is that the 400 speed film is actually repackaged Ilford FP4 or
FP4+. I have tested both and they are very similar.
Scott
smwbmp@starpower.net
----- Original Message -----
From: "Gary Nored" <gnored@centurytel.net>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Friday, April 11, 2003 8:11 PM
Subject: Re: Film Speed and Negative Development
> On 7 Apr 2003, at 23:11, Scott Wainer wrote:
>
> Date sent: Mon, 07 Apr 2003 23:11:35 -0400
> From: Scott Wainer <smwbmp@starpower.net>
> Subject: Film Speed and Negative Development
> To: alt-photo-process-l@skyway.usask.ca
> Send reply to: alt-photo-process-l@skyway.usask.ca
>
> > Hi all,
> >
> > Having just bought some Arista Pro 125 (aka, Ilford FP4+) I decided to
run
> > some film speed tests. I tried Crawley's FX-37 developer, Kodak Xtol,
and
> > D-76/ID 11 and ran into what I consider a problem. All of the developers
> > indicated an EI of about 12-25 with standard development using a B+W
> > densitometer.
>
> Interesting you should mention this -- I've had problems
> with this film (4x5) too. Poor speed and very flat. I've been
> getting reasonable performance at ASA 50 developing
> with D76 1:1 for 14 min rather than the suggested 8 or 9
> min. But then, I'm shooting pinholes, so who knows? I've
> shot a couple of lens-based photos on the stuff rating at
> 100 in the D76. Seem to be ok, but I haven't measured
> with a densitometer. Neither sheet nor roll-film version of
> this speed film work well with Diafine, my developer of
> choice (I'm lazy) -- very flat.
>
> I've used the Arista 400 speed film with no trouble. I
> wonder if the 125 speed film is actually an Ilford
> equivalent...
>
> Gary Nored
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