[alt-photo] Re: gum curve question

[henk thijs]

Thanks Paul & Cor,
I go for it, keep you informed.
regards,
Henk



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www.thijs-foto.com
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On 19 aug 2010, at 16:40, Paul Viapiano wrote:

> Henk,
> 
> Ron Reeder had a curve available for gel-silver digital negs which works great on Ilford paper. I would try that if it's still around at his site or by emailing him.
> 
> But I would say to try any old weak digital positive whether PDN or not...you'll know in 5 minutes whether the range looks good on the APHS film.
> 
> BTW, I use APHS all the time here to make traditionally enlarged negatives. I use digital negs for tricolor, as well as to save time with the other processes, but there's nothing like a film neg for many reasons. It's the drudgery of the two-step wet process plus the ever-present dust problem that gets to you after a while...;-)
> 
> Paul
> 
> 
> 
> ----- Original Message ----- From: "henk thijs" <henk.thijs at hetnet.nl>
> To: "The alternative photographic processes mailing list" <alt-photo-process-list at lists.altphotolist.org>
> Sent: Thursday, August 19, 2010 5:41 AM
> Subject: [alt-photo] Re: gum curve question
> 
> 
>> Hi Cor,
>> Yes, i am aware of the problems, i used the film 'ages ago' with Dektol ten times diluted, and i could use the results.
>> But at that time i used interpositives made on Ilford multigrade - grade 0 or 1 when i remember well- , but now the interpositive is made by inkjet printing, and my question was : what about the difference in light-blocking . Is there some curve, or is it ok to make a fairly less contrasty digital  positive.
>> Just wondering about if the 'UV-light-inkjet-blocking' is also true for 'normal light'.
>> But ok, if i am wasting my time , i will contact you ..... but in what way do you use the stuff?
>> regards,
>> Henk
>> 
>> ps i will check the article; still a valuable source of information.
>> ------------------------------------
>> www.thijs-foto.com
>> ------------------------------------
>> 
>> On 19 aug 2010, at 10:38, <C.Breukel at lumc.nl> <C.Breukel at lumc.nl> wrote:
>> 
>>> Henk,
>>> 
>>> I think it will be hard to get a continuous scale/tone out of APHS film,
>>> as you know this is a lith film, essentially black or clear, to get
>>> continuous tone out of it you'll need something like LC-1 developer, and
>>> even than you'll get a somewhat weird curve (I believe they are in a
>>> small article I wrote once for Judy's JPFP journal), so I think it will
>>> be hard to "transfer" the digital curve to the film curve..
>>> 
>>> Best,
>>> 
>>> Cor,
>>> 
>>> Ps if you want to throw the film away I would gladly take it..;-)..
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>> 
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