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Warm tone using developer or toner??
Hi all
I have recently had some pleasing results from using Ilford's warmtone paper but I'm baulking at having different 'toned' paper stocks for the sizes that I might want to use (for want of freezer space as much as cost) So my question is - will I be able to obtain the same colour as warmtone paper using a developer or toner with normal paper? If so, which is the best way to go? Does it matter? Thanks Paul |
#2
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Warm tone using developer or toner??
In article ,
Paul Mead wrote: Hi all I have recently had some pleasing results from using Ilford's warmtone paper but I'm baulking at having different 'toned' paper stocks for the sizes that I might want to use (for want of freezer space as much as cost) So my question is - will I be able to obtain the same colour as warmtone paper using a developer or toner with normal paper? If so, which is the best way to go? Does it matter? Thanks Paul I have always felt you can match any tonality using various chemistries toner included however...getting there. I feel your best option is buying the largest stock you use in the paper type of choice and cutting down to the sizes you need. That way everything is the same emulsion. -- The sometimes insomniac. www.gregblankphoto.com |
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Warm tone using developer or toner??
Greg "_" wrote:
I feel your best option is buying the largest stock you use in the paper type of choice and cutting down to the sizes you need. That way everything is the same emulsion. That's a thought... is there a way of making this very efficient of paper? I can obviously cut A4 sheets in half to get two A5 sheets but no-one seems to make A4 except for Ilford and then not in WT. I'd like to avoid having to cut down 11x14 to get 8x10 and then waste the rest! |
#4
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Warm tone using developer or toner??
"Paul Mead" wrote in message ... Hi all I have recently had some pleasing results from using Ilford's warmtone paper but I'm baulking at having different 'toned' paper stocks for the sizes that I might want to use (for want of freezer space as much as cost) So my question is - will I be able to obtain the same colour as warmtone paper using a developer or toner with normal paper? If so, which is the best way to go? Does it matter? Thanks Paul I don't think you can exactly match the image color of a warm tone paper by toning. However, toning with certain toners substantially improves image stability so its desirable if you can get an acceptable color. The image color of a toned print depends on several factors, mostly the color of the original image. The warmer it is the more it will tone. If a sulfiding toner is used the color will shift from purplish for cold tone papers toward yellow-brown for warm tone papers. Selenium is affected similarly, cold tone papers tend to have little color change but some intensification, warm tone papers will tone from a purplish sepia to a red-sepia as the original image goes from slightly warm to quite warm. The developer makes a difference. Warm tone developers tend to produce yellower sepia but the amount of bromide is also very important. Contrary to the popular wisdom that increased bromide shifts the tone of toned prints toward yellow, it has the opposite effect. Adding bromide will shift the color toward a bluer brown. If you get too yellow a sepia try using a very active developer with a lot of bomide added. Ira Current, of the old Ansco company, recommends in a patent the use of 20 to 80 grams per liter of stock of Potassium bromide for shifting sulfide toned images toward cold brown. He used a developer similar to Dektol. There are a great many toner formulas for Sepia or brown tones. One can obtain some commercially packaged. The three types of toner generally available a indirect sulfide toner, direct sulfide toner, and Selenium toner. Indirect toner requires preleminary bleaching of the image in a ferricyanide and bromide bleach. The print is then redeveloped in a weak solution of Sodium sulifde. Kodak Sepia Toner II is of this type. Indirect Sepia toners tend to produce quite yellow tones and are best on cold tone papers or papers developed with lots of bromide in the developer. Kodak Brown Toner is a direct toner of the polysulfide type. It has the advantage of not split toning (different rates of toning for high and low density parts of the image) and is well suited for partial toning for image permanence. KBT must be used at an elevated temperature to tone in a resonable time. Kodak Rapid Selenium Toner is a direct toner which can be used over a range of dilutions. For many years highly diluted KRST was recommended for image protection. At 1:20 the toner has little effect on image color or density. However, it was discovered nearly 20 years ago that this process no longer provides sufficient image protection. Greater toning in KRST does generate a stable image but this requires toning to the point where a definite change in image color and/or density is produced. Selenium tends to be purplish or reddish on many papers. There are other types of toners for producing a Sepia tone but you have to mix your own. At one time Both Kodak and Agfa made toners which were a combination of a Polysulfide toner and a Selenium toner. Both products are now discontinued but one can make a combination toner from KBT and KRST, I've posted the formula to this group in the past but will post again if desired. The formula I have yeilds somewhat redder tones than KBT and is very fast, toning being complete in about a minute at room temperature. My suggestion is to experiment with a couple of paper stocks, one warm, the other neutral, and KBT. Use an active developer like Dektol and experiment with adding bromide to see the effect on the toned image color. Ilford Bromophen is a Phenidone and hydroquinone print developer which probably contains some Benzotriazole. I don't know what effect these have on the toner. Bromide can be added to Bromophen. While it is not as effective as an anti-fog agent as Benzotriazole for Phenidone the effect here is different. Current, in his patent, speculates that the bromide changes some of the silver chloride found in many papers into bromide, which tones colder. For more on toning I suggest two books by Dr. Tim Rudman; _The Photographer's Master Printing Course_ and _The Photographer's Toning Book_ both are in print, available from Amazon and other book stores, and neither is expensive. -- --- Richard Knoppow Los Angeles, CA, USA |
#5
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Warm tone using developer or toner??
In article ,
Paul Mead wrote: Greg "_" wrote: I feel your best option is buying the largest stock you use in the paper type of choice and cutting down to the sizes you need. That way everything is the same emulsion. That's a thought... is there a way of making this very efficient of paper? I can obviously cut A4 sheets in half to get two A5 sheets but no-one seems to make A4 except for Ilford and then not in WT. I'd like to avoid having to cut down 11x14 to get 8x10 and then waste the rest! Find out first the biggest sheet you can handle-space wise. Also what max size you can obtain, then layout the various sizes on a sheet of scrap drawing paper......in the dark you"ll want a large Guillotine type paper cutter versus a rotary blade. Small left over scraps can always be used for tests or other small prints...throw little away! -- The sometimes insomniac. www.gregblankphoto.com |
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