Kodachrome (K-14) vs. Ektachrome (E-6) Color Slides

Discussion in 'Darkroom Developing and Printing' started by Jeff L, Feb 15, 2004.

  1. Jeff L

    Jeff L Guest

    Hello,

    I have a few questions about color slides, some of which I have
    wondered about for the past 20 years or so. Could anyone answer
    these?:

    1) What all is involved in the K-14 process? How many, and what kind
    of chemicals are there? Why have they never been available to the
    public?

    2) What would happen if someone tried to process Kodachrome film using
    the E-6 process?

    3) What is the difference in chemistry between Kodachrome and
    Ektachrome films?

    4) In detail, what do each of the 7 chemicals in the E-6 process
    actually do? If you omit the color developer step, will you get B&W
    slides?

    5) Is it possible to process C-41 print film using E-6 or K-14
    chemicals to end up with slides instead of negatives? What about D-76
    B&W print film?

    6) Since color slides were invented in 1936, what year were the first
    color prints available? All of my parents' family photos older than
    the mid-60's are all B&W, except for color slides from the 50's.

    Thanks,
    Jeff
     
    Jeff L, Feb 15, 2004
    #1
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  2. There are 14 steps (K-14, get it?) Here is a link to the K-Lab
    processing manual on the Kodak site. You can read the section on
    "processing steps" to get a better idea of how it works:

    http://www.kodak.com/global/en/service/Zmanuals/z50.shtml
    There are a number of reasons. The process is complicated, and has to
    be very tightly controlled, both chemically and the temperatures. It is
    probably beyond most amateur's abilities. You also need a pure red and
    a pure blue light to re-expose the film during processing. Finally, one
    of the chemicals, used for refogging the film, is somewhat toxic, and
    Kodak probably never wanted to take the risk.
    You would first upset the person doing the processing. Kodachrome has a
    unique antihalation backing called Remjet that will come off the film in
    the first processing step. The backing will deposit itself like a tar
    all through the processing machine. The machine then has to be taken
    apart to be cleaned.

    Other than that, the processes are entirely different. E-6 relies on
    dyes already in the film, while Kodachrome is essentially a multi-layer
    black and white film, where the dyes are added during processing. In
    short, you won't get anything.
    As above, they are quite different.
     
    James Robinson, Feb 15, 2004
    #2
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  3. Jeff L

    no Guest

    One note: It's very possible to process C-41 as E6 and vice versa.
    First, you will get slides from your print film or negs from your slide
    film. However the colours become very strange indeed. I have done this
    on a number of occasions with varying, albeit artistic results.
     
    no, Feb 15, 2004
    #3
  4. Don't know. Kodak has never been forthcoming about what is in the process.

    You would end up with orange film with nothing on it.

    Don't know.
    1. developer - develops exposed silver to a normal b&w image
    2. stop bath
    at one time a second exposure to light was needed here.
    3. color developer -- develops the rest of the silver and causes the dyes
    coupled to the silver to "develop"
    4. bleach - converts all silver to solulable.
    5. fixer - standard fixer disolves the silver.
    6. wash
    7. stabilizer -- makes the dyes last longer used to be formadlehyde.


    The process can be cut down to a developer/color developer combination,
    bleach/fix (blix) combination, wash/stabilizer combination assuimg the
    chemicals are not reused. If they are to be reused a wash or stop bath
    would be needed between the developers and blix to prevent
    contamination.


    no. but there have been some interesting results published using C-41 for
    E-6 film.
    no idea.

    Geoff.
     
    Geoffrey S. Mendelson, Feb 15, 2004
    #4
  5. First developer, three reversal exposures and three color devlopers,
    bleach, fix, wash, etc.
    Blank film.
    Different kind of color couplers. Kodachrome's couplers are in teh
    developers, Ektachrome couplers are in the film.
    No, you will get nothing but bank film...
    Kodak made Kodachrome prints service available soon after Kodachrome
    film became available.
     
    Michael Scarpitti, Feb 16, 2004
    #5
  6. Jeff L

    Slingblade Guest

    I had E6 (Ektachrome 200) processed with C41 through a mistake at a
    photolab once.

    The "prints" that were returned to me looked very ethereal.

    The "negatives" had a wierd bluish cast (completely unlike the orangy
    cast you usually encounter with REAL negative film).

    The lab never caught their mistake until I pointed it out and
    complained, and then they gave me those shots for free and free
    processing on a future roll of slide film. I took them up on the free
    processing of the next roll, then changed future processing jobs over
    to another lab.
     
    Slingblade, Feb 16, 2004
    #6
  7. No available. because it need special hardware to exposure the 3 emulsion
    layers color by color.
    no image...all silver metal will be converted to silver halide by the bleach
    and dissolved by fixer, because no dye will be ever formed.
    R, G, B reversal exposure and 3 different colour developer.
    First dev converts latent image to silver metal. Reversal bath chemical fog
    the undeveloped silver halide. Color developer develop the chemically
    fogged silver halide to silver metal and form dyes. Conditioner prepares
    the film for the bleach. Bleach converts all silver metal to silver halide.
    Fixer dissolves all silver halide. Stabiliser stablises the color dye and
    help drying evenly.
    C41 film can go through E6 and form positive image. B/W film in C41 or E6
    will become transparent as all silver metal will be removed by bleach and
    fixer



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    ¡¹¡¸Lonely Boy¡¸¡¹, Feb 16, 2004
    #7
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