U of S | Mailing List Archive | alt-photo-process-l | Re: How many gum layers (Re: ferri sesquichlorati)

Re: How many gum layers (Re: ferri sesquichlorati)


You may be correct.  I think that matching the exposure scale of gum with a negative that has the proper density range just puts you closer...along with a good curve.  For tri-color this is probably all that is  needed, or very close.  For other methods of printing, I think it  would be helpful, but a person might still want to do additional printings to get the effect they want.

I don't remember Chris saying that doing so  would give the effect of a Carbon print.   I thought she said it would improve the print, which I would agree with.

Going around  and around sure makes a person dizzy.

Best Wishes,
Mark Nelson

Precision Digital Negatives - The System
PDNPrint Forum at Yahoo Groups
Military Commissions Act of 2006 - A STAIN on our Nation's History

In a message dated 10/24/06 11:57:18 AM, kthayer@pacifier.com writes:

I don't know... around and around and around we go.  We had a 
spirited debate about this a while back that started around the 
question of top-down vs bottom-up hardening.  Chris issued a 
challenge: she said that using the method of matching the negative to 
the short scale of gum, she would be able to equal the tonal scale of 
a carbon print with a one-coat gum.  I said, well, I'm skeptical but 
I'm willing to be shown.  But when she finally posted the print, it 
was  just your usual one-coat gum, with a couple dark tones,  a 
couple mid tones and a couple light tones, but nothing like subtlety 
of tonal gradation throughout a long tonal scale that's possible with 
a carbon print, or with multiple printing with gum. As I said, so far 
the only example of a one-coat gum I've seen that seemed to live up 
to that ideal was Marek's back-printed flowers; nothing else has come 
close. So, until someone shows me something more interesting, I'll 
continue to say that the only way to do that is with multiple printing.