Thanks again, Carlos, I'll try it both ways. I'll just take 10% time off of both times to compensate for the Jobo.
Vielen, vielen Dank--Doug On Feb 20, 2010, at 2:16 PM, CarlosMFreaza wrote:
Doug: I wrote you'll need to do some tests and I only suggested as a try Perceptol full strength 10' for EI 125, you interpreted my suggestion right, however I think Allen is right too, I did not think about the film speed restrainer dilution issue and then I suggest now two ways to start: 1) Exposing the Film at ISO 64 and developing it with Perceptol full strength at 68/20ºC for 8' , you'll gain fine grain (Ilford instructions). 2) Exposing the film for its ISO 125 nominal speed and developing it with Perceptol 1:3 during 18' ( Digitaltruth suggestion for Plux X 35mm, but it must work for 120), you'll lose a bit of fine grain but you'll win sharpness. As I explained, these are developing times for the Plus X pre-2007, but Kodak says the devoloping times variations are very slight for the later version and Digitaltruth says old times are good starting points. Carlos PS: Anyway I have no doubt you could obtain usable negs with my original try suggestion. 2010/2/20 Douglas Nygren <dnygr@xxxxxxxxxx>:Thank you, Carlos. Let me run this by you to see if I understood you correctly.If I shoot the Kodak 125 PX at 125, I can develop it at 68/20 degrees for 10minuites with the Perceptol at full strength. Right? That at least is a starting point in this. How long will the Perceptol keep? The TM Rs I use has a long shefl life after I open it. Best regards and saludos--Doug I develop it in a Jobo which means about 10 percent less or 9 minutes. On Feb 20, 2010, at 1:06 PM, CarlosMFreaza wrote:Ilford instructions for Perceptol and Plus X 125 are given for anExposure Index of ISO 64 ASA/19º DIN, it means you need to adjust yourlightmeter at ISO 64/19 of course. At this EI and 68/20ºC and Perceptol stock solution (full strength) developing time is 8', diluted 1:1 (or 1+1) is 8'30" and diluted 1:3(1+3) developing time is 12'.Microdol X and PX 125 developing time at EI ISO 125 and 20ºC is 8' andthis is the EI and they are time and temperature I have used (this is the new Kodak developing chart from 2007), however it's necessary to note that Ilford Perceptol developing time could be (I'd say it is) for the previous Plus X 125 version (pre-2007) and according Kodak,developing times could be slightly different from 2007 versions (filmsare the same, but the manufacture process changed and then the variations). I'm afraid you'll need to do som tests for Perceptol and PX 125, anyway according Digitaltruth the Ilford developing times for the pre-2007 Plus X versions are a good starting point. This site gives this combo for Plus X at EI 125 : Perceptol 1:3 at 68/20º, 18'. If you wish EI 125, I'd do a try using 10' Perceptol full strength. Carlos--- Rollei List - Post to rollei_list@xxxxxxxxxxxxx- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in thesubject field OR by logging into www.freelists.org- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in thesubject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list--- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list
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