RA4 101 with a basic enlarger?

Discussion in 'Color: Film, Paper, and Chemistry' started by yeknom02, Aug 23, 2011.

  1. yeknom02

    yeknom02 Member

    Messages:
    308
    Joined:
    Mar 11, 2010
    Location:
    State Colleg
    Shooter:
    Multi Format
    Hi everyone,

    I didn't realize that the RA4 chemicals and paper were as inexpensive as they are. I'm thinking that I may want to try out the color printing process for myself. However, I only have the Beseler 23C enlarger, which does not have a color head. I was planning on getting a set of Arista color filters (C/M/Y) from Freestyle to put in the filter drawer, if that would even work.

    But the thing that confuses me is the denotation of filtration. I see starting suggestions like 30M 40Y, which means nothing to me other than a certain amount of magenta and yellow light being .

    Are there any beginner guides out there for RA4 printing, preferably on the web or in old posts on APUG? (I did try searching, but it was still confusing)
     
  2. Greg Davis

    Greg Davis Member

    Messages:
    2,055
    Joined:
    Feb 4, 2004
    Location:
    Nicholasvill
    Shooter:
    8x10 Format
  3. David Lyga

    David Lyga Subscriber

    Messages:
    1,943
    Joined:
    Nov 25, 2007
    Location:
    Philadelphia
    Shooter:
    35mm
    Those are the filtration amounts. Try about 40M + 50Y IF, and only if, you have filtered properly in your camera (ie, outdoors no filter, indoors blue filter 80A). I use NO filter indoors under tungsten light and have to give much more yellow when I print. - David Lyga.
     
  4. yeknom02

    yeknom02 Member

    Messages:
    308
    Joined:
    Mar 11, 2010
    Location:
    State Colleg
    Shooter:
    Multi Format
    So, when you say, for example, 40M + 50Y, are you placing two filters (one magenta, one yellow) in the light path simultaneously?
     
  5. mopar_guy

    mopar_guy Subscriber

    Messages:
    1,176
    Joined:
    Sep 12, 2009
    Location:
    Washington,
    Shooter:
    Multi Format
    I just dug out an old set of Beseler color printing filters that I had squirreled away. The packaging says that this is the 8932 (5 1/2 x 5 1/2) set for Beseler 23C and other enlargers. The filters are intended to go in the filter drawer just below the condenser. There are three colors included in the set: Cyan, Magenta and Yellow. The available filter values are .025, .05, .10, .20, .30, .40, and .50 for each color. You use combinations of these filters to obtain the desired value. To get a value of 45M + 55Y use the yellow .50 and the yellow .05 and the magenta .40 and the magenta .05. Using the Heat Absorbing Glass is recommended. You will have to increase exposure in the enlarger to compensate for the filter factor.
     
  6. coops

    coops Member

    Messages:
    25
    Joined:
    Nov 15, 2007
    Shooter:
    4x5 Format
    Be prepared for very short exposure times also. Most of mine were a second or two.