HP-5+ in Rodinal

Discussion in 'Black and White' started by ed b., Jul 21, 2000.

  1. Does anyone have a recommended time for HP-5+ at EI 200 in Rodinal? I would prefer a dilution of 1:50 or higher. I also need recommended times for Delta 400 and Verichrome Pan in Rodinal at high dilutions.
     
  2. For HP5+ try 7'15"/75F Rodinal 1:50. I don't recall the EI for that but I think it was about 200; I ordinarily add 20g/L sodium sulfite to the working solution for this combo to get EI 320. It isn't enough sodium sulfite to make mush grain.

    <p>

    My only experience with Delta 400 in Rodinal 1:50 gave grain that looked sorta like oatmeal.
     
  3. Hi Ed ;
    Here are some EI's / times for Verichrome Pan in full strength D76 at 20oC ;
    N+2 ; EI 400 ; 12.5 minutes
    N+1
    ; EI 250 ; 10 minutes
    N
    ; EI 125 ; 7 minutes
    N-1
    ; EI 80 ; 6 minutes
    N-2
    ; EI 50 ; 4.5 minutes
    Not quite what you asked for, but I hope it helps you with this beautiful film. I wish it was available in 4x5. Regards
     
  4. Ed...jim here...I'm the guy that asked the Delta 3200 question that
    prompted you to construct the _GREAT_ Delta 3200 chart on your
    <unblinkingeye.com> site. Anyhow several years ago I received a paper
    from Agfa detailing the use of Rodinal at 1+25, 1+50 and 1+100
    dilutions...it is somewhat out of date as some film emulsions have
    changed but I know that it works great for TriX. The paper suggests a
    standard time of 20 minutes for all 1+100 and 15 minutes for all 1+50
    dilutions. What changes is the EI you shoot the film at and the
    contrast index the neg produces...(I'm not sure what this contrast
    index means, perhaps you could explain?). So here goes...all the
    following for 35mm or 120 at 20 C or 68 F with constant aggitation
    for the first minute and then 5 seconds every additional 30
    seconds...which for me works as 20 gentle complete inversions in the
    first minute and one gentle complete inversion for each remaining 30
    secondsyou would shoot HP5+ at EI 160 for Rodinal at 1+100 (20
    minutes)...Agfa does not recomend HP5+ at 1+50 and they rated HP5+ at
    320 in 1+25 Rodinal for 8 minutes...Now TriX was another story...TriX
    is rated at EI 400 for 1+100 (20 minutes)or EI 250 at 1+50 (15
    minutes) and it looks _great_ although I prefer Agfa APX 400 at EI
    250 for 1+100 (20 minutes)...I will have to check the sheet for Delta
    400 as I do not remember if there was a time for it (it may not have
    been released when the sheet was written)...I will also check for
    Verichrome Pan...email me if you have any questions or if you want me
    to fax the sheet...thanks for all your help in the past...jim
     
  5. I like HP-5+. I love Rodinal. The combination sucks.
     
  6. > The combination sucks.

    <p>

    In what way?
     
  7. John, Thank you for calling me out on HP5+/Rodinal. I am unable to
    document my findings with that combination in a large series of
    film/developers which I tested last year. Please excuse my
    unintentional arrogance in shooting off my mouth (with my brain in
    neutral).
     
  8. > calling me out on HP5+/Rodinal

    <p>

    Well I can think of a couple of ways it could be considered to suck; big grain and lower EI being the two most prominent ones. Adding from 20 to 50 g/L sodium sulfite to the working solution will help, although not tremendously.

    <p>

    Larger formats help a lot. <G>
     
  9. I just received an update of the Rodinal at 1+100 Chart that I wrote
    of above. The update lists HP5+ shot at EI 160 in Rodinal at 1+100 at
    68 degrees for 20 minutes, contrast is .50. It lists HP5+ at EI 100
    in Rodinal at 1+100 at 68 degrees for 15 minutes, contrast is .45.
    Delta 400 is listed at EI 160 at 1+100 at 68 degrees for 20 minutes,
    contrast .60 or EI 125 at 1+100 for 15 minutes, contrast is .50. My
    Agfa rep promises to get me a time / EI for Verichrome...I'll list it
    as soon as i receive it...jim
     
  10. Ed, The following is from the Photo Lab Index dated 1980. HP5 --
    gives brilliant, full scale negatives with remarkable detail in both
    highlights and shadow areas.

    <p>

    HP5 in Rodinal 1+75 -- ISO 200 (20)C 16 min (24)C 10 1/4 min

    <p>

    The development times are given for negatives printed in condenser
    enlargers with normal average scene brightness on grades 2 and 3
    paper. The data assumes processing in a spiral tank with agitation
    for the first 10 seconds of development and then for 10 seconds every
    minute for the remainder of the development time. For continuous
    agitation reduce time by 25 to 40 percent.

    <p>

    The FP-4 chart mentions contrast development to a G of 0.55. I
    assume 0.55 also applies to HP5 data.

    <p>

    I looked up Agfa and Rodinal and came up with info for Plus X, a
    similar emulsion to Verichrome.

    <p>

    Plus X in Rodinal 1:100 ISO 125 (20)C 11 min
    Plus X in Rodianl 1:75 ISO 160 (20)C 12 min

    <p>

    Directions: Agitate continuously for the first minute, After the
    first minute, every thirty seconds give nild agitation for about five
    seconds, and continue this method until the desired development time
    as been achieved. For 72 degress decrease development time by 20%.
    Sorry, no contrast reference point was given but should be the same
    as current Rodinal directions.
     

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