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#21
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Thanks to everyone...Follow up Question...
"Robert Chin" wrote in message
... For now though I like the idea of a dilution that will allow me long development times. I'm using the Kodak Tmax film now. Mostly the 100, but in the future, I will be using the others. What is a good developer/dilution (preferably using Kodak or Ilford chemistry) that will get me longer development times, like in the range of 10+ minutes? D-76 diluted 1:1 at 68F will do well. Ilford's ID-11 is the same. Choose one and be happy. I gather you prefer longer times to avoid uneven development. Good idea. If you are doing sheet film, I can recommend Rodinal 1:100 stand processing. |
#22
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Thanks to everyone...Follow up Question...
"Robert Chin" wrote in message ... "Lawrence Akutagawa" wrote in message ... If ambient temperature is a concern, use a water bath of 68 degrees in which you sit your loaded tank between agitation cycles. A water bath doesn't work for me because of the lack of workspace. Plus, I'm using those big HP plastic tanks for 4x5 film. Do you have any other formulas that would work? hmmm...sounds like you are dealing with a considerable volume of liquid. Why try an experiment? Fill your tank as usual, but with just plain water at 68 degrees. Set down and come back 15 or so minutes later and see exactly how much temperature change has occurred. If you want something more realistic, agitate the water periodically as you would during the development cycle. And if the temperature differential is only a degree or two, then try one trial negative and evaluate the results. |
#23
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Thanks to everyone...Follow up Question...
pico wrote: snip What format are you using? 4x5? I do 4x5 to 8x10 using stand development with Rodinal 1:100. I use trays, 11x14, when in the developer, after a 2 minute water bath, I give them a shuffle and just let them float emulsion side down, periodically check with my hands to make sure one or more are stuck together. I let them float for 18 min. How do you do it? Cheers, Bogdan I gather you prefer longer times to avoid uneven development. Good idea. If you are doing sheet film, I can recommend Rodinal 1:100 stand processing. -- __________________________________________________ ______________ Bogdan Karasek Montr‚al, Qu‚bec bogdan (at) bogdanphoto.com Canada www.bogdanphoto.com "I photograph my reality" __________________________________________________ ______________ |
#24
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Thanks to everyone...Follow up Question...
Oooops:
That should be "are NOT stuck together" hmmmmm????? Freudian slip ???? Cheers, bogdan Bogdan Karasek wrote: pico wrote: snip What format are you using? 4x5? I do 4x5 to 8x10 using stand development with Rodinal 1:100. I use trays, 11x14, when in the developer, after a 2 minute water bath, I give them a shuffle and just let them float emulsion side down, periodically check with my hands to make sure one or more are stuck together. I let them float for 18 min. How do you do it? Cheers, Bogdan I gather you prefer longer times to avoid uneven development. Good idea. If you are doing sheet film, I can recommend Rodinal 1:100 stand processing. -- __________________________________________________ ______________ Bogdan Karasek Montr‚al, Qu‚bec bogdan (at) bogdanphoto.com Canada www.bogdanphoto.com "I photograph my reality" __________________________________________________ ______________ |
#25
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Thanks to everyone...Follow up Question...
In article ,
Robert Chin wrote: A water bath doesn't work for me because of the lack of workspace. Plus, I'm using those big HP plastic tanks for 4x5 film. Do you have any other formulas that would work? Oof. I wouldn't use the HP plastic tank for 4x5 film, except as a last resort. There are other systems that are almost as compact and which will give far more even and consistent results without the need for very long development times. For example, you could hand-agitate a small Jobo tank with the 2509N sheet film reel. Though Kodak no longer recommends it, I find Xtol diluted 1:2 is useful for longer development times. If you have very fresh developer and ensure you have enough concentrate in the tank for the total number of sheets it should work well. Paul Butzi's web site has some times which have worked well for me. -- Thor Lancelot Simon "The inconsistency is startling, though admittedly, if consistency is to be abandoned or transcended, there is no problem." - Noam Chomsky |
#26
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Thanks to everyone...Follow up Question...
On Thu, 15 Nov 2007 15:15:25 -0500, "Robert Chin"
wrote: "Lawrence Akutagawa" wrote in message .. . If ambient temperature is a concern, use a water bath of 68 degrees in which you sit your loaded tank between agitation cycles. A water bath doesn't work for me because of the lack of workspace. Plus, I'm using those big HP plastic tanks for 4x5 film. Do you have any other formulas that would work? Mix up some D-23 and dilute 1:2 for 14 minutes at 70F. Works in my HP CombiPlan. JD |
#27
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Thanks to everyone...Follow up Question...
"John" wrote in message
... Mix up some D-23 and dilute 1:2 for 14 minutes at 70F. Works in my HP CombiPlan. Wow...This is great info. I did some reading on D-23 and it seems like just the ticket. Do you have anymore info or can you recommend a place to get more information? I'd be interested in time / temperature chart and variations of mixtures that will allow me to have development times in the neighborhood of 14-15 minutes at about 76F. I've already ordered the stuff to make D-23 and plan to experiment with it shortly. |
#28
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Thanks to everyone...Follow up Question...
On Wed, 2 Jan 2008 09:21:47 -0500, "Robert Chin"
wrote: "John" wrote in message .. . Mix up some D-23 and dilute 1:2 for 14 minutes at 70F. Works in my HP CombiPlan. Wow...This is great info. I did some reading on D-23 and it seems like just the ticket. Do you have anymore info or can you recommend a place to get more information? I'd be interested in time / temperature chart and variations of mixtures that will allow me to have development times in the neighborhood of 14-15 minutes at about 76F. I've already ordered the stuff to make D-23 and plan to experiment with it shortly. It's a decent mix. And 76F is about the temp of the tap water here in TN in the summertime. Try 1:3 at 76 for 15 minutes. JD |
#29
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Thanks to everyone...Follow up Question...
In article ,
John wrote: On Wed, 2 Jan 2008 09:21:47 -0500, "Robert Chin" wrote: "John" wrote in message .. . Mix up some D-23 and dilute 1:2 for 14 minutes at 70F. Works in my HP CombiPlan. Wow...This is great info. I did some reading on D-23 and it seems like just the ticket. Do you have anymore info or can you recommend a place to get more information? I'd be interested in time / temperature chart and variations of mixtures that will allow me to have development times in the neighborhood of 14-15 minutes at about 76F. I've already ordered the stuff to make D-23 and plan to experiment with it shortly. It's a decent mix. And 76F is about the temp of the tap water here in TN in the summertime. Try 1:3 at 76 for 15 minutes. JD Yep I think D23 does pretty good as well. After trying it upon your suggestion I would say its my second next favorite- PMK being my firstest. -- Reality is a picture perfected and never looking back. |
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