Well, maybe this is the problem with a discussion that purports to be
about a standard printing time for gum but all the examples are taken
from some other process: it gets confusing. But I too was thinking
in terms of a one coat gum, not in terms of one layer of a multiple
gum print.
kt
On Jul 15, 2006, at 11:12 AM, Ender100@aol.com wrote:
> Hi Katherine,
>
> I think you are referring to my blabbering about choosing a
> "reasonable" Standard Printing Time with Palladium when there is a
> lot of self masking/printing out and as a result, no merged steps
> on the step tablet—so that one isn't pushing a lot of the image
> info into the shoulder of the H&D curve. This of course is
> significant, since the circumstances I am describing is a single
> exposure print with Palladium, so there aren't any additional coats
> to be applied to achieve the final vision of the print.
>
> I'm not sure what you mean below when you say "And I guess I don't
> see why that makes sense."
>
> I apologize in advance for my density—log 2.7
>
> Mark
>
> I would agree, that there are so many ways that one might
> In a message dated 7/14/06 11:25:47 AM, kthayer@pacifier.com writes:
>
>
>> Mark, this is related to the point I was making re gum. For many
>> reasons, the "natural" exposure times for gum emulsions will vary
>> widely, even given the same light source and other protocol. Setting
>> an arbitrary exposure time, whether you set it at the median of the
>> distribution of exposure times or at the lower end, as it seems
>> you're suggesting here for another process, some emulsions just
>> aren't going to be comfortable with the arbitrary exposure time. The
>> farther the "natural" exposure time is from the arbitrarily-chosen
>> "standard printing time" the more awkward and extreme curve will be
>> required to make that emulsion print a reasonable print in the
>> unnatural exposure time. And I guess I don't see why that makes
>> sense.
>>
>> Katharine
>
>
>
>
>
>
> 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
>
>
Received on 07/15/06-01:39:46 PM Z
This archive was generated by hypermail 2.2.0 : 08/31/06-12:23:48 PM Z CST