Results 1 to 7 of 7

Thread: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

  1. #1

    Join Date
    Jul 2008
    Location
    Istanbul - Türkiye
    Posts
    55

    Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    Click image for larger version. 

Name:	wet plate_page-0014-min.jpg 
Views:	66 
Size:	55.4 KB 
ID:	227078Click image for larger version. 

Name:	wet plate_page-0010-min.jpg 
Views:	55 
Size:	30.9 KB 
ID:	227079

    Hello there , I attached two pages from an article which tries and compare textile pieces with todays technology and wet plate collodion. At wetplate samples , even smallest light shadow tonal differences are visible , smallest textile creases are visible.

    THE MYSTERY OF WET PLATE PHOTOGRAPHS AND COLOR —
    FURTHER INVESTIGATIONS
    Virginia Mescher

    You can google and easily access free.

    I thought why todays panchro color and bw films are dull and death but wetplate was so active and lively ?

    Is there a light matter interaction nonlinearity ?
    or does narrow band pass spectrum do it always ?
    or the basic reason was the size of the negative and the low ASA high resolution ?
    or does uv band always do it ?

  2. #2

    Join Date
    Nov 2017
    Posts
    276

    Re: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    the narrower the spectrum the less chromatic aberration you get. uv has higher potential resolution than longer wavelengths. wet plate has extremely fine grain and high contrast.

  3. #3

    Join Date
    Jul 2008
    Location
    Istanbul - Türkiye
    Posts
    55

    Re: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    Quote Originally Posted by maltfalc View Post
    the narrower the spectrum the less chromatic aberration you get. uv has higher potential resolution than longer wavelengths. wet plate has extremely fine grain and high contrast.
    Thank you. I try to remember a few details on wet plate fine grain but no success. Can you help me to put together ? I had been read a research paper from russia with micrographs of the emulsion. They found that the grains are like greek columns and each column appear with different heights depending on light recorded. I found it like 3d map. I think this might help to record everything with more dimension and make the detail variability greater.

    I want to read on finer grain , I need a helping hand.

  4. #4

    Join Date
    Nov 2017
    Posts
    276

    Re: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    Quote Originally Posted by Mustafa Umut Sarac View Post
    Thank you. I try to remember a few details on wet plate fine grain but no success. Can you help me to put together ? I had been read a research paper from russia with micrographs of the emulsion. They found that the grains are like greek columns and each column appear with different heights depending on light recorded. I found it like 3d map. I think this might help to record everything with more dimension and make the detail variability greater.

    I want to read on finer grain , I need a helping hand.
    wet plate grain structure is outside my area of expertise.

  5. #5
    Foamer
    Join Date
    Oct 2010
    Location
    South Dakota
    Posts
    2,379

    Re: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    I shoot both wet plate and b&w film. My impression after looking at samples under a medium powered microscope is that film silver is in large clumps/crystals, while wet plate silver seems to be almost molecular. At least, it's much finer.


    Kent in SD
    Qui sedes ad dexteram Patris,
    miserere nobis.

  6. #6
    Vaughn's Avatar
    Join Date
    Jan 2007
    Location
    Humboldt County, CA
    Posts
    8,689

    Re: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    Quote Originally Posted by Mustafa Umut Sarac View Post
    T...I had been read a research paper from russia with micrographs of the emulsion. They found that the grains are like greek columns and each column appear with different heights depending on light recorded. I found it like 3d map. ....
    Actually this sounds similar to the images that can be created in single transfer carbon prints. My images have a raised relief, where the image is made of "greek columns" of pigmented gelatin. The taller columns are darker than the shorter ones (white is no column). The short columns next to tall ones on the print's surface create a sense of greater sharpness, an acute acutance, so to speak.

    In the case of the carbon prints, the image is made with a non-diffuse UV light source, contact printed, and the gelatin "emulsion' that gets exposed to UV light hardens (its melting point is raised). The unexposed (non-image) gelatin melts away in hot water.

    I would have to guess about how the wet plate image is created. Perhaps like carbon there is a thick enough emulsion (or equivilent) to create the columns with little or no bleed-over across (sideways) the emulsion.
    "Landscapes exist in the material world yet soar in the realms of the spirit..." Tsung Ping, 5th Century China

  7. #7
    Foamer
    Join Date
    Oct 2010
    Location
    South Dakota
    Posts
    2,379

    Re: Wet Plate Ultra Detail compared with todays films, WHY THIS HAPPENS ?

    Quote Originally Posted by Vaughn View Post

    I would have to guess about how the wet plate image is created. Perhaps like carbon there is a thick enough emulsion (or equivilent) to create the columns with little or no bleed-over across (sideways) the emulsion.

    The emulsion on wet plate is pretty thick, and the silver seems to permeate that thickness rather than just sit as a layer on top.


    Kent in SD
    Qui sedes ad dexteram Patris,
    miserere nobis.

Similar Threads

  1. New Films for the Ilford Ultra Large Format Film Program
    By frednewman in forum Announcements
    Replies: 2
    Last Post: 27-Apr-2012, 17:21
  2. All LF Colour Films compared
    By timparkin in forum Darkroom: Film, Processing & Printing
    Replies: 26
    Last Post: 5-Jul-2011, 10:37
  3. How did those Wet Plate togs get perfect plates compared w dirty modern stuff?
    By Frank Petronio in forum Darkroom: Film, Processing & Printing
    Replies: 35
    Last Post: 30-Aug-2010, 12:02
  4. 6x9 vs. 4x5 In todays digital world?
    By Mike Kravit in forum Cameras & Camera Accessories
    Replies: 14
    Last Post: 10-Jul-2001, 07:04

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •