Re: Determining SPT with gum Was: Gums a la Demachy and Puyo

From: Katharine Thayer <kthayer_at_pacifier.com>
Date: Sat, 15 Jul 2006 12:33:54 -0700
Message-id: <4D22B44A-5806-4BA7-9586-E411F51EBDC6@pacifier.com>

Mark,
I think maybe you're missing my point. My point isn't that it's fun
to experiment wildly by deviating from "standard procedure." I'm
talking about standard printing procedure, using different emulsions.
My point is that there's no such thing as a "standard printing time"
for gum, because each emulsion has a different "standard printing
time." So if you arbitrarily print all emulsions at the same
standard printing time, then of course each one will require a
different curve, to fit it to the arbitrary printing time. I don't
see the point, when it's so much easier to just print each emulsion
the way it likes to be printed. That's what I meant when I said, "I
guess I don't see why that makes sense." Hope that's helpful,
Katharine

On Jul 15, 2006, at 11:49 AM, Ender100@aol.com wrote:

> Katherine,
>
> I agree with what you are saying about gum and the endless possible
> ways one can manipulate the pigment mix, chemistry, printing time,
> and even curve to achieve very subtle effects on the print. I have
> no problem with that at all.
>
> Even with single exposure Palladium Prints, I have great fun
> manipulating all sorts of variables (chemistry/Exposure/Negative
> Density Range/Curve) to achieve different effects in my prints—
> depending on what I want the final outcome to be and the results
> can be very prdictable.
>
> I think these variances are often the most satisfying prints you
> make because of the subtle differences from "standard printing" you
> are able to achieve. I also think the methods often make a richer
> looking print due to having more tones preserved in the resulting
> print—in fact more than possible in a straight inkjet print
> designed to produce the same "look"
>
> Best Wishes,
> Mark Nelson
> To NSA: When you read this email, would you please search your
> database for my other black sock?
> Precision Digital Negatives--The Book
> PDNPrint Forum at Yahoo Groups
> www.MarkINelsonPhoto.com
>
> In a message dated 7/14/06 11:36:57 AM, kthayer@pacifier.com writes:
>
>
>> But for someone like me who works sometimes
>> in extremely pale tints with hardly any pigment at all and sometimes
>> in very dark heavily pigmented emulsions, and everywhere in between,
>> it would make no sense at all to try to impose a standard printing
>> time and fit every curve to that arbitrary time.
>
>
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>
Received on 07/15/06-01:32:35 PM Z

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