Wet plate in color

[William quaintance]

As a painter I resurrected the collodion wet plate process for reprography purposes in color it is little known that it was developed. I have acquired the entire lab just to prove to myself it is real. Photography is not my main focus and as such the process has been shuttered. Interested individuals may contact me at billquaintance [at] yahoo.com. thankyou for your interest

 

[ic-racer]

I have never heard of it. Can you post an example?

 

[William quaintance]

The only one example I know of is in the national gallery Washington d.c.. it is of roses. this was accomplished with the Gum print process. The density would be terrific. This process is very slow as to develope great density. Faster emulsions and flexible film seems to have overtaken the field. Great uncle h.p.bosse produced a volume titled views on the mississippi fyi. Do you work in wet plate photography?

 

[koraks]

Welcome to Photrio @William quaintance ! I'm sure many here would love to read/hear/see more about your wet plate color process - including myself!

I have done some wet plate a few years ago, but ultimately moved away from it due to its practical limitations (the need to have a darkroom present at the moment/place of making an exposure). And the silver stains in my windowsills etc. became pretty bad, too...

I had pondered about extending sensitization, but never read about anyone extending it sufficiently into longer wavelengths to make credible green-sensitive plates, let alone red-sensitive. In your process, is color information recorded for blue, green and red, or are colors added at the printing stage?

I'd love to see that rose print in the National Gallery. I searched their collection, but nothing turns up that matches your description.

 

[William quaintance]

Welcome to Photrio @William quaintance ! I'm sure many here would love to read/hear/see more about your wet plate color process - including myself!

I have done some wet plate a few years ago, but ultimately moved away from it due to its practical limitations (the need to have a darkroom present at the moment/place of making an exposure). And the silver stains in my windowsills etc. became pretty bad, too...

I had pondered about extending sensitization, but never read about anyone extending it sufficiently into longer wavelengths to make credible green-sensitive plates, let alone red-sensitive. In your process, is color information recorded for blue, green and red, or are colors added at the printing stage?

I'd love to see that rose print in the National Gallery. I searched their collection, but nothing turns up that matches your description.

Àll these problems seem to have been covered. The Gum pigment can be used to print though it being a light sentsized water color it needs multiple over printing to build up color. I am a painter so I understand finely ground pigments are necessary. I will revisit my notes. I think I found the example under gum pigment prints. I grind by hand fine pigment in oil aplied to mahogany panels. Three different safe lights are used to develope plates. To quote the keeppers of ligh, Book title, photography is more than pushing a button. I hope to divest of the Lab since painting is my focus. Thankyou for your interest.

 

[koraks]

Well, I know about gum printing in color, as well as several other photographic pigment printing processes. But what grabbed my attention was the combination of collodion wet plate and color. To be sure we're ont he same page: collodion wet plate = collodion salted with halide salts poured onto a plate, then sensitized by soaking it in a silver nitrate solution for a while. The plate is then used while still wet. I've never seen or heard anyone do this in color. Could you focus on this bit, please?
The gum printing part is also nice, but technically not directly related to image capture.

I grind by hand fine pigment in oil aplied to mahogany panels.

I've never heard of people using mahogany to grind pigments. Interesting. I've tried mulling (muller + ground glass), but prefer a rock tumbler as it tends to give a better dispersion ('grinding' is a misnomer; it's really a combination of wetting and dispersion).

I wonder to what extent we're on the same page with the terminology on all this...

 

[William quaintance]

Well, I know about gum printing in color, as well as several other photographic pigment printing processes. But what grabbed my attention was the combination of collodion wet plate and color. To be sure we're ont he same page: collodion wet plate = collodion salted with halide salts poured onto a plate, then sensitized by soaking it in a silver nitrate solution for a while. The plate is then used while still wet. I've never seen or heard anyone do this in color. Could you focus on this bit, please?
The gum printing part is also nice, but technically not directly related to image capture.



I've never heard of people using mahogany to grind pigments. Interesting. I've tried mulling (muller + ground glass), but prefer a rock tumbler as it tends to give a better dispersion ('grinding' is a misnomer; it's really a combination of wetting and dispersion).

I wonder to what extent we're on the same page with the terminology on all this...

 

[William quaintance]

I paint on northern Italian type wood panels
Grinding is done with muller and slab. It's glass because I couldn't find porphyria. Pure genuine permanent pigments in Swedish cold pressed ĺinseed oil lead ground casein ground. 14 different yellows. Brevity constrains me from the missive.

 

[William quaintance]

I paint on northern Italian type wood panels
Grinding is done with muller and slab. It's glass because I couldn't find porphyria. Pure genuine permanent pigments in Swedish cold pressed ĺinseed oil lead ground casein ground. 14 different yellows. Brevity constrains me from the missive.

Three different dyes are combined with collodion to make color separation plates. They were quite difficult to obtain but persistence led to success. 3 different liquid safe lights. Umn fabricated a bottle lamp. Lab is shuttered as I am a painter primarly.

 

[William quaintance]

The national gallery of art collection of gum bichron includes a color print in 2 colors. See John dudley Johnston title a venetian waterway. The rose still life is elusive. It is of interest that the waterway itoan active scene yet so fine. All the references to color collodion are well documented and actinic screens were extensive. I revisited the library since the roof was being replaced. All is in good order. Thankyouforyourinterest

 

[William quaintance]

The little known color process in collodion in color was a challenge to resurrect. It is complete though as a painter I lack confidence to use it. Perhaps someone interested will adopt the lab in total. Beautiful Examples exist at the national gallery. I live in minneapolis

 

[Andrew O'Neill]

Collodion is orthochromatic, so I imagine to have colour, it's applied by hand?

 

[koraks]

The little known color process in collodion in color was a challenge to resurrect. It is complete though as a painter I lack confidence to use it. Perhaps someone interested will adopt the lab in total. Beautiful Examples exist at the national gallery. I live in minneapolis

I've merged this post with the previous thread you created on this topic.

I suspect that the apparent lack of interest relates closely to the lack of specific description or detail on your alleged invention (e.g. so far it's not quite clear if you're talking about a camera capture or a printing process, or both).

 

[William quaintance]

Collodion is orthochromatic, so I imagine to have colour, it's applied by hand?

It is not hand tinted.
The history of collodion wet plate photography proceeded into color by the use of dyes that were tested extensively. Three colors of safe lights were required. This advance made it panchromatic is the term I think. As a painter semantics can be a problem for me. This is well documented but little known. So b

 

[Andrew O'Neill]

It is not hand tinted.
The history of collodion wet plate photography proceeded into color by the use of dyes that were tested extensively. Three colors of safe lights were required. This advance made it panchromatic is the term I think. As a painter semantics can be a problem for me. This is well documented but little known. So b

Very cool!

 

[William quaintance]

Just to clarify the emulsion is dyed in 3 separate colors while printing maybe accomplished with gum bichromate which yields a light sensitized watercolor.

 

[koraks]

This is well documented

Can you give some references, please?

 

[William quaintance]

At this point my research was intensive at umn library and too deep to go into so briefly. I could suggest a study in actinic screens. You may believe every box is checked. My favorite task was to design a liquid safelight capable of accommodating changes of colored fluid. The recipes for each color bath were available. Umn glass technology is shuttered. The topic is large though well defined. Just now I have the ear of muser des beaux artsts etc tours , topic found self portrait a. Bosse

 

[koraks]

Sorry, I can't make sense of what you're saying. It's a jumble of words to me.

 

[loccdor]

porphyria

Had to search the etymology to figure out this word. In common language I think it's only used to refer to a disease. But I assume you're talking about a mixture made from sea shells?

Etymology of "porphyria" by etymonline

"purple" (see purple) + -in (2). Some of the compounds are purple. See origin and meaning of porphyria.

www.etymonline.com

 

[xiaruan]

您的意思是三色湿板是通过对光波长具有不同敏感性的三层火棉胶乳液实现的吗？

 

[William quaintance]

您的意思是三色湿板是通过对光波长具有不同敏感性的三层火棉胶乳液实现的吗？

Please translate the request into English.

 

[koraks]

Please translate the request into English.

Click here to get this:

Do you mean the three-color wet plate is achieved with three layers of collodion emulsion with different sensitivities to light wavelengths?

I'd be grateful if you could answer it.

 

[William quaintance]

Three separate plates are coated with different dyed emulsions. Registration is required to capture the image. The plates are developed under three different color safe lights.

 

[William quaintance]

Had to search the etymology to figure out this word. In common language I think it's only used to refer to a disease. But I assume you're talking about a mixture made from sea shells?

Etymology of "porphyria" by etymonline

"purple" (see purple) + -in (2). Some of the compounds are purple. See origin and meaning of porphyria.

www.etymonline.com