Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,947   Posts: 1,557,852   Online: 803
      
Page 12 of 17 FirstFirst ... 267891011121314151617 LastLast
Results 111 to 120 of 162
  1. #111

    Join Date
    Apr 2008
    Location
    Santa Cruz, CA
    Shooter
    Multi Format
    Posts
    167
    Images
    17
    We may want to start a new thread over on DPUG about digital half-tone negatives, however it seems it would be better to keep it all here. I have started attempting/experimenting with half-tone negatives from an inkjet printer. I have not gotten results worthy of attempting a carbon print yet, as the screen is still too course. But I'm still at very early stages of trying different methods. Most the info out there is from silk screen printers, who don't need the resolutions we need with a carbon print. There is some stuff from photogravure people and they are using aqua-tint screens in combination with digital negatives. That may be the way to go, but there are still more methods to try first.

    I started this quest after seeing the highlight detail in CMB' prints. I'm far from a great carbon printer, but I can't even get close with a digital negative to his examples with half-tone negatives.

  2. #112
    holmburgers's Avatar
    Join Date
    Aug 2009
    Location
    Rochester NY (native KS)
    Shooter
    Multi Format
    Posts
    4,421
    Images
    2
    This is a very interesting discussion. I'm putting September 1927, Photographic Journal, pages 418-419 on my library list and if I can easily find it I will post it.

    Just for the sake of mentioning it, analog half-toning is also an option and it doesn't sound that difficult (but what do I know..). However, I guess you'd need a process camera, or a copy camera with a provision for placing the line-screen at various points in the optical path.

    F.E. Ives discusses the principle of the "optical-V" in his autobiography (which I can share if anyone is interested, just drop me a line, I've scanned it... shhh...). The key variables are (a) number of lines per inch in the line-screen, (b) distance of line-screen to film plane and (c) f/stop.

  3. #113

    Join Date
    Nov 2011
    Shooter
    Medium Format
    Posts
    15
    If I may chime in on this topic...

    Many years ago I was an avid reader of (I believe it was titled) "Darkroom Photography" magazine and in those issues, the magazine quite often detailed many alternative processes including color carbon printing. If you manage to find any back issues, you will find a veritable treasure trove of information on the topic.

    Cheers, Eros
    Last edited by ErosP; 11-22-2011 at 09:57 PM. Click to view previous post history.

  4. #114
    Davec101's Avatar
    Join Date
    Jul 2005
    Location
    Cambridge, U.K
    Shooter
    Large Format
    Posts
    897
    Images
    125
    This is somewhat related to the OP, Nick Knight has an exhibition on at the moment that includes one of well known images as a hand coated pigment print, I will see it in the gallery next week however i am quite surprised at the size of it at 40x60 inchs (http://showstudio.com/shop/product/devon_nick_knight) Would like to know who is printing these, I heard it was someone in the U.S. Charles do you know if Todd printed this, if not who did?

    The one of Kate Moss is smaller however is selling well i believe @ £30,000 (http://showstudio.com/shop/product/kate.

    thanks

    Click image for larger version. 

Name:	279_960n.jpg 
Views:	52 
Size:	275.1 KB 
ID:	42595
    Last edited by Davec101; 12-05-2011 at 06:24 AM. Click to view previous post history.
    Platinum Printing Editions http://www.dceditions.com
    The Art of Platinum Printing Blog http://artofplatinum.wordpress.com/
    Alternative Photographic Processes blog http://altphotoblog.com/

  5. #115
    CMB
    CMB is offline

    Join Date
    Mar 2011
    Location
    Santa Cruz, CA
    Shooter
    Multi Format
    Posts
    89
    Tod did not make the prints. My guess would have been "Mac" MacGowan who makes mural size monochrome carbros but I hear he has been ill for the last year or so. Perhaps it was that Frenchman who lives on your side of the pond.

  6. #116
    Swellastic's Avatar
    Join Date
    Aug 2011
    Location
    Norway
    Shooter
    Multi Format
    Posts
    23
    Maybe I am foolish to say this, but I am thinking that one could simply make the colour seperation negatives from regular black and white large format film? Of course, digital negative printing has its conveniences, but I presume there is nothing against going about it in the old fashioned way? As one might conclude, I am suggesting this since I am a bit of a dunce when it comes to using digital workstations.

    Also, I am slightly curious about the albumen coating emulsion that was demonstrated in one of the videos. Albumen, water and bichromate of potash - how much of each is used to create the emulsion solution?

  7. #117
    holmburgers's Avatar
    Join Date
    Aug 2009
    Location
    Rochester NY (native KS)
    Shooter
    Multi Format
    Posts
    4,421
    Images
    2
    Here is a paper from the Yahoo! carbon group that gives instructions for making a temporary support with dichromated albumen.. http://f1.grp.yahoofs.com/v1/IFn7Tjz...0Transfers.doc

    Suggesting analog colour separation negatives is as right as rain.

  8. #118
    Swellastic's Avatar
    Join Date
    Aug 2011
    Location
    Norway
    Shooter
    Multi Format
    Posts
    23
    I thank you deeply for providing relevant reading material, but the link appears to be broken. I cannot access the document

  9. #119
    holmburgers's Avatar
    Join Date
    Aug 2009
    Location
    Rochester NY (native KS)
    Shooter
    Multi Format
    Posts
    4,421
    Images
    2
    Ahh shoot... lemme try again...

    This should work, I just saved the word file and attached it. If not, you can join the Yahoo! Carbon Transfer group, go to Files, then Sizing for Art Papers and it's the top 1 I believe.
    Attached Files

  10. #120
    Swellastic's Avatar
    Join Date
    Aug 2011
    Location
    Norway
    Shooter
    Multi Format
    Posts
    23
    Excellent! That worked superbly. Thank you ever so much.



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin