Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,522   Posts: 1,572,255   Online: 747
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 15
  1. #1
    Mustafa Umut Sarac's Avatar
    Join Date
    Oct 2006
    Location
    İstanbul - Türkiye
    Shooter
    35mm RF
    Posts
    3,956
    Images
    108

    Autochrome , Two Different Easy Processes for Absolute Success

    There are two ways for success at Autochrome.

    First : Buy an autochrome plate for 60 dollars from antiques shop , peel off the panchromatic emulsion and get screened glass that side and put a modern BW film contacting with glass and take your autochrome pictures , hundreds of them with using the same plate and register the developed films later and see the autochrome colors and pictures.

    Second , get first panchromatic side removed autochrome plate , scan it , get a copy of your autochrome screen and than filter your color pictures with that original screen file and apply curves to it and get your autochrome digital file for your magazine.

    You can sell that file later and turn it to money.

    These are the only ways costs less than 60 dollars and absolute success.

    Best ,

    Mustafa Umut Sarac
    Istanbul
    Last edited by Mustafa Umut Sarac; 07-29-2012 at 01:56 PM. Click to view previous post history. Reason: John and George's intelligent comments

  2. #2

    Join Date
    Jun 2003
    Shooter
    Multi Format
    Posts
    16,880
    Images
    27
    hi umut

    if you remove the pan-emulsion won't you be removing
    all the potato starch+color dyes at the same time?
    or are they on the OTHER side ... and it that is the case
    how do you know which side is the potato starch/dye side
    and which is the b/w emulsion side ?

    thanks!
    john

  3. #3
    George Nova Scotia's Avatar
    Join Date
    Mar 2010
    Location
    Nova Scotia Canada
    Shooter
    Multi Format
    Posts
    469
    Images
    9
    John, I have a few unused Agfa Farbenplatten glass plates. I decided to take one out of the box and put it in some fixer to have a look. When washing I found the pan-emulsion was very soft (likely needed some hardening) and with a little warm water peeled right off. The starch-dye layer is on the same side under the emulsion and although fragile protected with a varnish or lacquer coating. In use these plates would be used with the glass side forward. Exposing thru the glass then the starch-dye layer to the emulsion. They come with a sheet of card to protect the emulsion from the springs in the plate holder.

    Geogre

  4. #4
    Mustafa Umut Sarac's Avatar
    Join Date
    Oct 2006
    Location
    İstanbul - Türkiye
    Shooter
    35mm RF
    Posts
    3,956
    Images
    108
    Hmmm , I think John, you were very right at your question , I was thinking that they are not at the same side but George saved the day. Now I know this is possible. George , can you sell me one of your plate peeled off ?

    Umut
    Last edited by Mustafa Umut Sarac; 07-29-2012 at 01:53 PM. Click to view previous post history.

  5. #5
    George Nova Scotia's Avatar
    Join Date
    Mar 2010
    Location
    Nova Scotia Canada
    Shooter
    Multi Format
    Posts
    469
    Images
    9
    Umut, I replied to your PM. I not sure how much packing it would take to get a 4"x5" x 1.5mm thick glass plate safely around the world!

    Did I mention that I have 7 more unexposed plates? Some year I hope to find a 4x5 plate holder and see if they still work . I did find a description and formula for reversal processing, so I'm part way there.

    George

  6. #6
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    23,382
    Images
    65
    George;

    Holmburgers would due for one of those plates!!!

    Or give an arm or a leg or something else that he has 2 of.



    PE

  7. #7
    George Nova Scotia's Avatar
    Join Date
    Mar 2010
    Location
    Nova Scotia Canada
    Shooter
    Multi Format
    Posts
    469
    Images
    9
    Well I do need new knees. Mine are both worn out!

    George

  8. #8
    Mustafa Umut Sarac's Avatar
    Join Date
    Oct 2006
    Location
    İstanbul - Türkiye
    Shooter
    35mm RF
    Posts
    3,956
    Images
    108
    George , I replied to your pm , I am sorry for time difference and late reply but What can I do . You can figure out to protect the glasses, I am sure. I can buy broken one also a new one.

    Thank you ,

    Umut

  9. #9
    George Nova Scotia's Avatar
    Join Date
    Mar 2010
    Location
    Nova Scotia Canada
    Shooter
    Multi Format
    Posts
    469
    Images
    9
    Take a look at this. It will give you an idea what I'm playing with. Still trying to get a "good" image, this setup was very shaky and hard to get a clean image.

    George

  10. #10
    George Nova Scotia's Avatar
    Join Date
    Mar 2010
    Location
    Nova Scotia Canada
    Shooter
    Multi Format
    Posts
    469
    Images
    9

    AGFA plates

    It appears my link may not work everywhere. Attached are the images. (Sorry these are digital images of a very old type of colour plate.)

    These are images of a Agfa Farbenplatten - glass plate. I not sure of the date likely around WWII. The B&W emulsion has been removed, peeled off with warm water.

    Approx 1x1mm area - digital zoom from a shaky dig image yes the red dots often appear more orange than red.
    Click image for larger version. 

Name:	1x1mm.JPG 
Views:	15 
Size:	90.1 KB 
ID:	54598

    The next two cover an area approx 25x35 mm, same area different exposure.
    Click image for larger version. 

Name:	Agfa_1.JPG 
Views:	13 
Size:	729.3 KB 
ID:	54599 Click image for larger version. 

Name:	Agfa_2.JPG 
Views:	9 
Size:	642.6 KB 
ID:	54600

    Now the whole 4x5 plate sitting Beseler 45 lamp house. The broken corner and heavy scratches are my fault. It been laying on desk for a while. The dark edges are from the plate.
    Click image for larger version. 

Name:	Agfa_3.JPG 
Views:	10 
Size:	237.4 KB 
ID:	54601

    Now my thoughts and comments.
    The white lines appear to be cracks in the coating. They might be effect of age or of the coating drying.
    If I recall some of research I did indicated that these plates should be used with and orange filter on the camera.
    I believe this is Agfa's version/copy of the Autochrome process. I'd be interested to hear what people think.
    Could these be used to "reproduce" the process with a modern emulsion? Maybe, but I doubt they could be used as a filter for film. The dots are very random.
    The overall green appearance may be related to the emulsion. The box indicates a green safelight may be used.
    My set-up for taking these pictures was not the best - 1:1 macros need a steadier support than what I tried!

    George

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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