Current options for tech pan development?

Discussion in 'B&W: Film, Paper, Chemistry' started by Athiril, Apr 14, 2013.

  1. Athiril

    Athiril Subscriber

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    Ideally would like a technidol substitute for 0.5 to 0.6 contrast index times/etc. ISO 16-32.

    Must either be something off the shelf from the follow:

    Current Kodak (excluding HC-110) or Ilford developers, Rodinal, Adotech II, LP Docufine

    Or something mixed up. Have phenidone, metol, hydroquinone, the usual.



    Must give times, must have even development without issue (pre-soak no pre-soak?).

    No test roll to run through, only a single roll.


    edit: Just found the info sheet for the LP Docufine, which has times for Tech Pan at different ISOs and gives the gamma for each one, so this is probably the choice for now (iirc its the same developer as Rollei RLC?)
     
    Last edited by a moderator: Apr 14, 2013
  2. chriscrawfordphoto

    chriscrawfordphoto Member

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    I did some many years ago in Rodinal 1+100 that came out nice. I forget the developing time though. It was almost 20 yrs ago.

    [​IMG]
     
  3. John Wiegerink

    John Wiegerink Subscriber

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    I'm with Chris on the Rodinal, but other will chime in and some will even advice against Rodinal for another developer. I think the shoots Chris has up speak for themselves. Years ago it was Rodinal 1:200 for me and I've heard of folks even going to 1:300(tried it too) for TechPan. I know the 1:200 worked fine for me, but you have to make sure you use enough volume/concentrate of developer since your diluting it down so much. I have a box of the liquid technidol packets that I'm saving just in case I run into some TechPan, but I'd have no problem using Rodinal if I didn't have it. JohnW
     
  4. michael_r

    michael_r Subscriber

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  5. Neal

    Neal Subscriber

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    Dear Athril,

    I use C-41 developer for 8-1/2 minutes in my Jobo (10 minutes using Kodak normal agitation technique). This was stolen from an old Photo Techniques Mastering Black-And-White Photography Vol 1 and it works wonderfully.

    Neal Wydra
     
  6. madgardener

    madgardener Member

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    Would the Bluefire police developer sold by Frugal Photographer work?
     
  7. PhotoJim

    PhotoJim Member

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    There's a time and dilution Kodak used to publish for XTOL that was glorious on Technidol. However... EI 6.
     
  8. Hatchetman

    Hatchetman Subscriber

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    This seems the obvious answer. From Photographer's Formulary.
     
  9. Mike Wilde

    Mike Wilde Member

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    Sorry, my calibrations for TP are for T/O XDR-1, from the Darkoom Cookbook. Basically 1g of metol per liter and very little else. Notes are at home, but I can gather if you express an interest.
    I bought a 25 sheet box of 8x10 hard stored TP. I cut it to 4x5 - one of these quadrants has had the gelatine thinned by having a hard object press on it. These sheets are used as 'guinea pigs' - the sheets to determine CI's etc.
     
  10. EdSawyer

    EdSawyer Member

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    For only one roll, I'd get some Technidol from Ebay in the foil packets. It should still be fine.
     
  11. Athiril

    Athiril Subscriber

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    Guys, again. Only whats listed above, or formulas. Nothing else. Especially from an overseas store. Seriously, why do people have a hard time sticking to the outlined requirements?

    Regardless, went with Docufine 1+4, 7 minutes, 20c. No idea what the shot speed was, had no information, was a found roll. Assumed ISO 25 was most likely. Though given the density, appears more like it was shot at ISO 12, but still otherwise useable.
     
  12. Mike Wilde

    Mike Wilde Member

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    So, not a commercial mix, but called TDLC-103. 1g metol, 5g soduim sulfite (pinch of this in prior to metol first), 10g sodium bicarbonate per litre.
    5g/l sodium sulfite as a stop bath is recommended with this. Not sure why; I have not experimented without it.

    Calibrated times at night by laying a Stouffer TP120 6x6cm 31 step 1/3 step step wedge on top of an inverted spare omega dichoric head under a copy camera. The head was dialled to 100C +30M to simulate daylight adn a DB diffuser was used and step wedge was masked off to cut down on possible flare. Shot with room lights off. Metered with a spot meter onto the 12th step to try to meter what I hoped would be middle grey. Took meter reading and factored in 2 stops for the bellows factor of the lens setting on the copy camera, a Polarid MP3. So exposure was f/5.6 1S as a first trial at EI25.

    Shot 4 negatives, and put all in same tank of developer. Pulled hangers and set into stop tank as timer ran. Ended up with data for 20C temps of times of 5, 8, 11, and 16 minutes, 30" agitation intervals.

    HD plots showed that for EI 25, I only got density out to 15 1/3 steps for the longest development time, and slope was steeper than standard development.

    So next round was EI 12, and I developed for 8, 10, 12.5, 16 and 20', again agitiate every 30". Much better data from this round. Exposures out to 20-22 steps.

    I use a R-18b Kodak development dial for all of my work. It comes from a mid 80's darkroom datatguide, and is handy for translating results to a standard 20C when things are not quite 20C. I have extended it's range to work out at 38C for E-6 as well.
     

    Attached Files:

  13. Nicholas Lindan

    Nicholas Lindan Advertiser Advertiser

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    Different folks like different looks. Some like the look of TP in Rodinal, some don't. Ditto for just about every other developer out there.

    Technidol works better than anything else. The next best is probably C-41. You can have TP developed by someplace that does color negative processing. Just make extra, extra sure they don't put it through the bleach or blix - the result of either will be clear film. In the old days of real camera stores that knew what they were doing it was no problem getting Tech Pan souped in C-41.

    Mike's suggestion of TDLC sounds fine by me. Tech Pan responds very well to pulling. I develop in Technidol and pull 1 stop exposure/-20% development time for a perfect match to grade #2 paper.

    The other alternative is very dilute HC-110 - if the MSDS is anything to go by this is probably the closest thing to Technidol you can get.
     
  14. StoneNYC

    StoneNYC Subscriber

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    The problem is you don't know what it was shot at... So how can you develop it properly? You can't you can only guess...

    The massive dev chart has generally accepted times which tend to be accurate in most cases.

    PRE-soak always says PE and I tend to follow his suggestions. Pre-soak 2-3 minutes.

    Then follow these times... Pay attention to the exposure index and pick the one you suspect was used on the film since its already exposed.

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]

    In addition I've developed Tech Pan in ilford DD-X at 6 minutes based on EI16 with good but high contrast results. But the film was from the 1980's so who knows how that affected the speed.

    Hope that was helpful and within your "request guidelines"


    ~Stone

    Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk
     
  15. StoneNYC

    StoneNYC Subscriber

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    The above times are always 1 minute gentile agitation and 2 gentile inversions every minute for the remainder of time for development.


    ~Stone

    Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk
     
  16. MattKing

    MattKing Subscriber

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    Are gentile agitations kosher?:whistling:
     
  17. StoneNYC

    StoneNYC Subscriber

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    Haha probably not, but I'm Roman Catholic and my girlfriend is Orthodox Jewish (except the dating me part) so I guess I can pretend its kosher :wink:


    ~Stone

    Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk
     
  18. Athiril

    Athiril Subscriber

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    Here's the docufine times with contrast index in case anyone was interested
    [​IMG]

    Also attached locally for preservation
    29yfwd5.jpg
     
  19. dr5chrome

    dr5chrome Member

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    Slides

    We run much TP still in dr5 - http://www.dr5.com/blackandwhiteslide/tp.html
    It is still a viable film. Even abused, it lasts a long time. I have found the best processing option for TP are positives.
    That kodak didn't make tecnadol available for the long term leaves no other option in my opinion.

    dw





     
  20. wildbill

    wildbill Member

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    "I have found the best processing option for TP are positives."
    I would too if that's how I made my living:smile:
    I still have yet to send you guys some film. Been meaning to do it for years.

    Here's how I've been doing it.
    25asa (sheet film)
    2 minutes presoak
    68 degrees
    rodinal 1:100 in jobo expert drum speed 3 for 5-6 minutes depending on the contrast range
    I print with chromega heads on vc paper. The results blow my mind every time.


    [​IMG]
    Untitled by vinnywalsh.com, on Flickr
    [​IMG]
    first frost by vinnywalsh.com, on Flickr
     
  21. dr5chrome

    dr5chrome Member

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    ..send film in or not, I could care less. I don't make 100% of my living processing film.
    It's beyond my comprehension why some who post here turn a suggestion into a boner.

    Process the film your-self as a positive, it's still the best result for the film today.
    ..is that the answer you wanted to hear... Bill..?
    If you were meaning to send in film and never did, perhaps now you lost that opportunity..

    regards. :munch:




     
    Last edited by a moderator: Apr 21, 2013
  22. wildbill

    wildbill Member

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    Did I not post helpful information that actually answers the op's question rather than suggesting something else which benefits my own business?
    Are you making a lot of prints from slides in your darkroom?
    I was joking that's why there's a smiley at the end. Yes, I actually have been meaning to send film in. I'll make sure to recommend dr5 to anyone who can figure out what planet your website is from.
     
    Last edited by a moderator: Apr 21, 2013
  23. JOSarff

    JOSarff Member

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    At the risk of going off topic, I use PMK-pyro for Tech Pan with a bleach presoak to make the TP a continuous tone film.

    Expose TP for an ISO of 40

    bleach (stock solution)
    5g Potassium Ferricyanide
    3g Potassium Bromide
    1 Liter water

    for use 5ml of bleach stock in 1 liter of water Pre-soak 5:00
    PMK-Pyro Diluted 1:1:100 Develop 8:30
    rinse :30
    Rapid fix 5:00
    Hypo Clear :30
    Wash tbd

    Givers really nice printing negs with good seperation

    Joe