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Go Back   APUG > APUG English Forums > Darkroom > Silver Gelatin Based Emulsion Making & Coating > New Silver Chloride Azo type paper

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Old 01-08-2008, 05:04 PM   #11 (permalink)
JLP
 
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Very interested too. Azo speed is fine but a stop faster don't hurt as long as the paper has the quality that you envisioned.
What it comes down to is cost within reason. Look forward as always to see where this goes.


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Old 01-08-2008, 05:07 PM   #12 (permalink)
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This seems very interesting indeed...
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Old 01-08-2008, 05:10 PM   #13 (permalink)
 
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I can't wait to see some prints or perhaps read a review by someone like Alex who has used Azo and your other papers.

Keep up the good work PE.
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Old 01-08-2008, 05:15 PM   #14 (permalink)
 
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Well, here is the problem. If you use the green sensitized emulsion with regular negatives, you will probably see no difference at all. My question is regarding staining developers and their effect on green sensitive contact papers, of which there are none AFAIK.

So, if you don't use staining developers, this paper would probably be of no use whatsoever. Just an ordinary emulsion. After all, most enlarging papers today are green sensitive.

So that is the question here. How do blue sensitive emulsions vs ortho sensitive emulsions compare when printed with negatives developed in staining developers?

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Old 01-08-2008, 05:40 PM   #15 (permalink)
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That is indeed the question. But since most (all?) the green-sensitive papers available today are vari-contrast, the only thing we can be certain of is that printing stained negatives on VC paper leads to much reduced contrast compared to printing the same negative on a (fixed grade) blue-sensitive paper, all other factors being kept as equal as practicable.
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Old 01-08-2008, 05:41 PM   #16 (permalink)
 
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Quote:
Originally Posted by Photo Engineer View Post
My question is regarding staining developers and their effect on green sensitive contact papers, of which there are none AFAIK. . . . How do blue sensitive emulsions vs ortho sensitive emulsions compare when printed with negatives developed in staining developers?
PE
Hi Ron,

Judging from your question, I take it that you don't have any stained negatives. That being the case, why not just send some of this paper to one of us to test for you? I'm sure you'll have a sea of happy takers ... and obtain some valuable practical testing information in exchange!

Happy 2008,

Christopher
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Old 01-08-2008, 06:13 PM   #17 (permalink)
 
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Ron, I am a (5x7 and 8x10) contact printer who still has a small stash of AZO. I would love to try your new emulsion/paper.
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Old 01-08-2008, 06:18 PM   #18 (permalink)
 
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Ron,

I use Pyrocat HD with my TMY negatives and develop them for contact printing on Canadian Grade 2 Azo. I also have Azo in old grade 2, grade 3 and some ancient grade 4. I also have some Haloid I could test against your paper. Let me know if I can be of assistance.
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Old 01-08-2008, 06:29 PM   #19 (permalink)
 
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Old 01-08-2008, 06:30 PM   #20 (permalink)
 
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PE

Keep us posted, very interested!
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