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Thread: Toning Van Dyke brown prints with thiourea

  1. #11

    Join Date
    Jun 2014
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    1,746

    Re: Toning Van Dyke brown prints with thiourea

    I'm sorry, but I don't think I still have the print in question. At least not where I can easily find it, and most likely I tossed it.

  2. #12

    Re: Toning Van Dyke brown prints with thiourea

    Quote Originally Posted by koraks View Post
    I'm sorry, but I don't think I still have the print in question. At least not where I can easily find it, and most likely I tossed it.
    No worries! I knew it was a long shot.

  3. #13

    Join Date
    Jun 2014
    Posts
    1,746

    Re: Toning Van Dyke brown prints with thiourea

    I may do a new one some day, but as it is, not enough time and already a backlog of things I want to do

  4. #14

    Join Date
    Dec 2011
    Posts
    20

    Re: Toning Van Dyke brown prints with thiourea

    Much to my surprise, I found the VDB print that I sepia toned a while back; it turned up when I was going through my stack of papers and film. Here's a scan... the colour you see is pretty accurate, and should show you why I don't like it.

    The original print is pretty dark, so maybe this wasn't a good choice to test this process. All that shadow looks pretty bad when it's a dull mustard yellow.

    Added after I originally posted this: I used the standard sepia toner process. I.e., I bleached the image with ferricyanide, potassium bromide ans sodium carbonate; then I redeveloped with thiourea and sodium hydroxide. The final colour can be controlled in redevelopment by changing the thiourea/hydroxide mix. I think for that I chose a mid-brown ratio. This is the reference I used:

    http://home.alphalink.com.au/~simgrant/jackspcs/tpt.htm

    Click image for larger version. 

Name:	2020-09-21_060001-01.jpg 
Views:	20 
Size:	46.7 KB 
ID:	207952

  5. #15

    Re: Toning Van Dyke brown prints with thiourea

    Quote Originally Posted by revdoc View Post
    Much to my surprise, I found the VDB print that I sepia toned a while back; it turned up when I was going through my stack of papers and film. Here's a scan... the colour you see is pretty accurate, and should show you why I don't like it.

    The original print is pretty dark, so maybe this wasn't a good choice to test this process. All that shadow looks pretty bad when it's a dull mustard yellow.

    Added after I originally posted this: I used the standard sepia toner process. I.e., I bleached the image with ferricyanide, potassium bromide ans sodium carbonate; then I redeveloped with thiourea and sodium hydroxide. The final colour can be controlled in redevelopment by changing the thiourea/hydroxide mix. I think for that I chose a mid-brown ratio. This is the reference I used:

    http://home.alphalink.com.au/~simgrant/jackspcs/tpt.htm

    Click image for larger version. 

Name:	2020-09-21_060001-01.jpg 
Views:	20 
Size:	46.7 KB 
ID:	207952
    Hey! This is so nice of you! Thanks a lot!!

  6. #16

    Join Date
    Dec 2011
    Posts
    20

    Re: Toning Van Dyke brown prints with thiourea

    You're welcome!

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