Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,548   Posts: 1,573,029   Online: 849
      
Page 3 of 3 FirstFirst 123
Results 21 to 27 of 27
  1. #21

    Join Date
    Oct 2008
    Location
    The End of the World
    Shooter
    Sub 35mm
    Posts
    242
    Images
    1
    Thanks for the explanation. I don't understand the chemistry too well but get the principle. I'll give this a go once I can get some sodium thiosulphate.

    I didn't know about the Scala 200X. That's a quite exciting prospect as it has a good reputation amongst still photographers as a reversal film. I see Wittner recommend rating it at 100ASA and using D94a.

    If working in Super 8 pays off for me then I'll consider investing in a bulk system.

    Tofek, where is the best forum for discussing Super8?

  2. #22

    Join Date
    Nov 2010
    Location
    Paris
    Shooter
    Multi Format
    Posts
    70
    The forums I know of are filmshooting.com , cinematography.com and super8.es (the most complete about reversal processing, though in spanish ), filmvorfuehrer.de (even worse, in german).

  3. #23

    Join Date
    Oct 2008
    Location
    The End of the World
    Shooter
    Sub 35mm
    Posts
    242
    Images
    1
    thanks tofek. I tried joining filmshooting.com a little while ago. I'm waiting for a response. I'll check out cinematography.com, too.

  4. #24
    Mike Wilde's Avatar
    Join Date
    Aug 2006
    Location
    Misissauaga Canada
    Shooter
    Multi Format
    Posts
    2,939
    Images
    29
    When I am calbrating an unknow film (and I do this semi often - on found films in bulk loaders I buy, etc). I expose them to a reflective step wedge test target in a copy camera, to determine the minimum effective exposure to overcome base and get image content off of the toe of the H-D curve.


    Then a transmission step wedge is useful.

    I use the step wedge in a slide copier where the light source is daylight to fine tune developer times.

    For reversal, thiocyanate into the first developer has always worked best for me to get rid of the overall grey haze.
    my real name, imagine that.

  5. #25

    Join Date
    Oct 2008
    Location
    The End of the World
    Shooter
    Sub 35mm
    Posts
    242
    Images
    1
    Quote Originally Posted by Mike Wilde View Post
    When I am calbrating an unknow film (and I do this semi often - on found films in bulk loaders I buy, etc). I expose them to a reflective step wedge test target in a copy camera, to determine the minimum effective exposure to overcome base and get image content off of the toe of the H-D curve.


    Then a transmission step wedge is useful.

    I use the step wedge in a slide copier where the light source is daylight to fine tune developer times.

    For reversal, thiocyanate into the first developer has always worked best for me to get rid of the overall grey haze.
    Mike. Good advice. I'd never heard the term step wedge but, yes, I had been thinking of printing a zone system strip in the darkroom to use in order to a get a better calibration, especially as I also use a Weston meter. I guess this is the same as a reflective step wedge. But I wonder, can such a reflective 9 step wedge be bought cheaply in the UK? I now see that there is a nice looking thing called a Stouffer 9 step wedge but they do not seem to be available here.

  6. #26
    Mike Wilde's Avatar
    Join Date
    Aug 2006
    Location
    Misissauaga Canada
    Shooter
    Multi Format
    Posts
    2,939
    Images
    29
    My reflective step wedge target is found in an old Kodak darkroom data guide.

    It is also posible to work from instructions in the 'Way Beyond Monochome' book of Ralph Lambrecht and make your own target on photo paper.
    Basically you work systematically increasing expoisures on a sheet of paper under the enlarger with no neg in the carrier with one inch strips progressively being uncovered between exposure intervals.
    The page of instructions is somewhere at home.

    If you are really serious about honing your craft, Ralphs book is an extremely useful reference that you can read many times and still learn and get ideas from.
    my real name, imagine that.

  7. #27

    Join Date
    Oct 2008
    Location
    The End of the World
    Shooter
    Sub 35mm
    Posts
    242
    Images
    1
    hi mike. thanks for the ideas. I've banned myself from buying books so I think the self-made strip will be fine for my purposes .

Page 3 of 3 FirstFirst 123


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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