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Neg / Pos digital neg real film

Loris Medici

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Hi David,

Indeed!

Maybe I should send you a small color print (or color patches) from my good old HP9180 (same - Vivera - inks as the Z3100-3200), letting you cook it - along with one of your gum prints, both half covered, for at least 3-4 months - taped to a South looking window, under the strong sun of the Mediterranean skies... How about that? Really, I'd like to see how they would compare. Never tried that myself...

Regards,
Loris.
 
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Bob Carnie

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Not a bad test.

I put a cibachrome and RA4 prints outside in North Facing wall.
Both faded completely in one year.
It kind of dispelled the Ciba myth for me as they both went at the same time, I think there is an independent lab testing papers but after buying The Permanence and Care of Color Photographs by Wilhelm , I have kind of lost interest as some of the test results changed once he started testing inkjet.

I would be interested in trying the inkjet, RA4 , tri colour gum test again, I have two monster skylights in my place that could accomodate such a test. Now just to get a tri gum I am happy with.

 

David Hatton

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Hi Loris,
I would like to try that, seriously. Let's organise something in April.

David
 

Kirk Gittings

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You should throw a dye transfer print in there too. Though much taunted for their archival properties, they are really only archival on dark storage or so I was told by Elliot Porters son.
 

donbga

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Kirk Gittings said:
You should throw a dye transfer print in there too. Though much taunted for their archival properties, they are really only archival on dark storage or so I was told by Elliot Porters son.
Click to expand...

Gum bichromate will out last dye transfer, ciba, type R (anything will outlast type R), Polacolor, RA4 and so on.

Don Bryant
 
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Bob Carnie

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I believe this to be true as well.

For kicks I am going to make as many different process prints before the summer and I will hang them side by side under my skydome, I do not have access to a dye transfer print and its not in my radar to make so I don't care.

I will put up carbon, tri carbon, tri gum, gum, silver gelatin, ptpd , cyanotype,RA4, Inkjet colour and bw, piezo and see how the cookies crumble.

I must point out that my testing is just for personal edification and not a test to be a wacky scientist in any way. I am not about to write any papers soon, maybe roll some but thats another story.

Don Bryant said:
Gum bichromate will out last dye transfer, ciba, type R (anything will outlast type R), Polacolor, RA4 and so on.

Don Bryant
Click to expand...
 
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