Carbon Transfer Video

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vyshemirsky

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Come on guys, isopropyl alcohol is good enough for our needs, and you don't need a license to buy it. It is widely available in the UK.
And this is the first time I hear it is a problem to get pure alcohol, as long as it doesn't have to be ethanol.
Don't drink isopropanol though, it will almost surely kill you.

I had no problems with obtaining black enough blacks, but then I am using a lot of pigment in my glop.
 

gmikol

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Come on guys, isopropyl alcohol is good enough for our needs...

And more to the point, ethyl alcohol (grain alcohol, dentatured alcohol) is incompatible with dichromates (at least pot. dichromate). The dichromate will spontaneously reduce any residual ethanol in the tissue to formaldehyde, hardening the tissue.

Don't know how likely that is (to have residual alcohol left in the tissue), but something to be aware of.

Also, while I'm not a UK resident, one place you may want to check for isopropyl alcohol are electronics stores, like Maplin. I get 99.9% isopropyl from Fry's here in the US.

-- Greg
 

Marco B

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I know I am going to be crushed here for saying this- sorry Mr Ware

Pt pd does have wonderful range of highlight mid tone.
But to ask me to swallow the believable black or envision that its black dosen't cut it in my world, Pt Pd just dosen't have a good black and lets move on. I am not talking emotion here but straight on looking at prints by some of the best printers in the world. Black is Black not fake black.

Vlad, I'm getting blacks that are in the 2.05 to 2.20 DR with my prints. Most are around 2.00 to 2.05. But it is not about the deepest black one can get, at least for me. It is about over all tonal range. This is why I print carbon, tonal range.

Bob, the question I posed was not about the maximum black at all, or the ability of a process to achieve a certain total range of density tones, but about the nature of how the tones render, e.g. the "magical" tonal rendition Jim also reported for carbon, next to the known properties of pt/pd.

My question specifically referred to whether these ways of rendering the tones, as so much loved by their respective printers, is inherent to the process, or is actually for a big part simply caused by the fact that many alternative processes are contact printing processes, generally not suitable for enlargement printing.

Hence I also referred to the fact that in my own experience with silver gelatine printing, and justly reported by many others here on APUG, there is something about the way contact printing deals with tones, that is difficult to achieve through enlargement printing... Highlights don't blow out easily, shadows seem to have more detail, even when using a silver gelatine paper if you contact print.
 

holmburgers

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Marco, could this be due to the Callier effect, or the lesser degree of it in contact printing?
 

Bob Carnie

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IMO
The problem with getting great tones at both ends has always been a fact of being second generation or third from the original scene with our prints as well the image is now being viewed with reflective light.
Our eyes adapt to shadows and highlights when viewing a scene, and as we all know our problem is to put back on paper believable tone to show a viewer the scene we originally saw .
Zone System of expansion and contraction has proven to be a valuable way of working around this problem, Pyro, Stand development , two other valuable ways.
In the last few years of printing I think the Split Printing method has allowed us printers to get even closer.
My goal is to use a filter that allows me great highlight and midtone separation and I work this first, then with a much higher filter I try to work on the lower tones that give much better shadow separation.. Then by combining 00 burns and 5 burns.. the 00 to place tonality just under specular highlight regions, and as well use the 5 to darken any black areas in these highlight regions, Incredible highlight separation can be achieved.
I feel a combination of good film, good exposure control, good developer and methods followed by good printing practices and toning, I am getting better at placing a fuller range of tones on paper than I could achieve some 10 years ago.

I just am trying to say , and maybe poorly , that Silver Prints have a range that many pt pd printers{myself included} can be envious of , and not the reverse as I sometimes here in discussions about pt pd.
Carbon.. another story, I think this process if mastered has the most potential of any monochrome process that we are all working with.
More videos like Andrews are encouraging and as well appreciated as they help tremendously in visualizing other methods, we may not have thought of in our own darkrooms.

I think contact printing is wonderful, don't get me wrong, but you do miss some of the intricate details or efforts dodging and burning affords one with enlargements, internally and locally within a scene. I feel my sweet spot for a 4x5 negative is either a 16 x20 or 20 x24 image, I am able to see the image on the easel and work the tools comfortably.

When contact printing there is no reference point other than looking straight down and hoping you get the burns and dodges right.
If one is doing straight , straight printing with very little manipulation then I would do everything contact, but thats just not for me.




Bob, the question I posed was not about the maximum black at all, or the ability of a process to achieve a certain total range of density tones, but about the nature of how the tones render, e.g. the "magical" tonal rendition Jim also reported for carbon, next to the known properties of pt/pd.

My question specifically referred to whether these ways of rendering the tones, as so much loved by their respective printers, is inherent to the process, or is actually for a big part simply caused by the fact that many alternative processes are contact printing processes, generally not suitable for enlargement printing.

Hence I also referred to the fact that in my own experience with silver gelatine printing, and justly reported by many others here on APUG, there is something about the way contact printing deals with tones, that is difficult to achieve through enlargement printing... Highlights don't blow out easily, shadows seem to have more detail, even when using a silver gelatine paper if you contact print.
 
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Andrew O'Neill

Andrew O'Neill

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I think contact printing is wonderful, don't get me wrong, but you do miss some of the intricate details or efforts dodging and burning affords one with enlargements, internally and locally within a scene. I feel my sweet spot for a 4x5 negative is either a 16 x20 or 20 x24 image, I am able to see the image on the easel and work the tools comfortably.

When contact printing for either silver or alt, I use dodge/burn masks.
 

Bob Carnie

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Yes me too
we have a Arc Welding Hood and gloves for this .. just a little bit cumbersome.
Not sure how accurate you feel this method is , I think its pretty general dodge and burn.
Now we are making inkjet and Lambda blocking masks to dodge and burn, much like the contour masking methods of the 60's.
beats the hell out of dodging and burning on a plate burner:munch:


When contact printing for either silver or alt, I use dodge/burn masks.
 

Curt

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?digital negatives?

I don't use them but I believe that they can be made with prior dodging and burning built in. ?Photoshop?

One can argue that their oranges are better than another's apples all day long.
 
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