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#1
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Rollei ATP film
Hi all, I've seen that it is available the Rollei ATP film, whose
"subtitle" is "Technical Pan". It's a long time I'm looking for a valid substitute of magic Kodal TP film, a film that could be treated also with non-standard baths such as POTA or Delagi. There are few data about this film, it is a superpanchromatic film, can anybody tell more? I really want test it, starting with very diluited Rodinal (1+100 and more). I'll let you know about results. Bye Z. |
#2
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Rollei ATP film
On 3/9/2008 12:26 AM piterengel spake thus:
Hi all, I've seen that it is available the Rollei ATP film, whose "subtitle" is "Technical Pan". It's a long time I'm looking for a valid substitute of magic Kodal TP film, a film that could be treated also with non-standard baths such as POTA or Delagi. There are few data about this film, it is a superpanchromatic film, can anybody tell more? I really want test it, starting with very diluited Rodinal (1+100 and more). I'll let you know about results. Sorry I can't give you any answers, but just one question: why would you want to ruin the potential results of a fine-grain film by developing it in Rodinal? |
#3
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Rollei ATP film
On Mar 9, 9:41 am, David Nebenzahl wrote:
On 3/9/2008 12:26 AM piterengel spake thus: Hi all, I've seen that it is available the Rollei ATP film, whose "subtitle" is "Technical Pan". It's a long time I'm looking for a valid substitute of magic Kodal TP film, a film that could be treated also with non-standard baths such as POTA or Delagi. There are few data about this film, it is a superpanchromatic film, can anybody tell more? I really want test it, starting with very diluited Rodinal (1+100 and more). I'll let you know about results. Sorry I can't give you any answers, but just one question: why would you want to ruin the potential results of a fine-grain film by developing it in Rodinal? I'ěve developed TP in Rodinal 1+300 using a semi-static procedure, obtaining a continuous tone negative and virtually no grain. I've posted this method on digitaltruth.com too. So it is not completely true that using Rodinal you ruin the fine grain characteristic of the film. Then, Rodinal is available easely, it non expensive, and generally I never use the reccomended bath for a film: for example never used Technidol for TP (it was really very expensive!). Bye Z. |
#4
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Rollei ATP film
"piterengel" wrote
"David Nebenzahl" wrote why would you want to ruin the potential results of a fine-grain film by developing it in Rodinal? My thoughts exactly. I've developed TP in Rodinal 1+300 using a semi-static procedure, obtaining a continuous tone negative and virtually no grain. Shoot two identical rolls of TP. Develop one in Technidol, the other in Rodinal. Make 11x14 prints. Compare. I kept hearing about how dilute Rodinal, Rodinal with sulfite, dilution-x of HC-110 give wonderful 'continuous-tone, fine grain' negatives. Being as cheap an stingy as the next man, I tried them - having used TP and Technidol since '83. The results _were_ negatives, and they _were_ continuous tone, and the grain _wasn't_ monstrous - but the results were truly awful. TP in Technidol produces prints with the same low, smooth and creamy tones of 2 1/4 - 4x5. Nothing in the print makes you think 'contrast'. TP in Technidol looks a bit like TMax-100 in Microdol. However TP and TMax prints, when viewed side by side, are very different and there is no doubt which is which. I have never used Technidol for TP It is possible that's why Rodinal looks good. If cost is an issue try POTA, it has to be the cheapest developer in creation. Better yet, have your girlfriend/wife buy you some Technidol for your birthday. It is the ideal gift: You need it, you want it (you will), and you won't buy it for yourself. -- Nicholas O. Lindan, Cleveland, Ohio Darkroom Automation: F-Stop Timers, Enlarging Meters http://www.darkroomautomation.com/index2.htm n o lindan at ix dot netcom dot com |
#5
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Rollei ATP film
On Mar 9, 5:46 pm, "Nicholas O. Lindan" wrote:
"piterengel" wrote "David Nebenzahl" wrote why would you want to ruin the potential results of a fine-grain film by developing it in Rodinal? My thoughts exactly. I've developed TP in Rodinal 1+300 using a semi-static procedure, obtaining a continuous tone negative and virtually no grain. Shoot two identical rolls of TP. Develop one in Technidol, the other in Rodinal. Make 11x14 prints. Compare. I kept hearing about how dilute Rodinal, Rodinal with sulfite, dilution-x of HC-110 give wonderful 'continuous-tone, fine grain' negatives. Being as cheap an stingy as the next man, I tried them - having used TP and Technidol since '83. The results _were_ negatives, and they _were_ continuous tone, and the grain _wasn't_ monstrous - but the results were truly awful. TP in Technidol produces prints with the same low, smooth and creamy tones of 2 1/4 - 4x5. Nothing in the print makes you think 'contrast'. TP in Technidol looks a bit like TMax-100 in Microdol. However TP and TMax prints, when viewed side by side, are very different and there is no doubt which is which. I have never used Technidol for TP It is possible that's why Rodinal looks good. If cost is an issue try POTA, it has to be the cheapest developer in creation. Better yet, have your girlfriend/wife buy you some Technidol for your birthday. It is the ideal gift: You need it, you want it (you will), and you won't buy it for yourself. -- Nicholas O. Lindan, Cleveland, Ohio Darkroom Automation: F-Stop Timers, Enlarging Metershttp://www.darkroomautomation.com/index2.htm n o lindan at ix dot netcom dot com I hope silly answers are end now... So can we turn back on Rollei ATP questions please? Thanks. |
#6
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Rollei ATP film
"piterengel" wrote in message ... Hi all, I've seen that it is available the Rollei ATP film, whose "subtitle" is "Technical Pan". It's a long time I'm looking for a valid substitute of magic Kodal TP film, a film that could be treated also with non-standard baths such as POTA or Delagi. There are few data about this film, it is a superpanchromatic film, can anybody tell more? I really want test it, starting with very diluited Rodinal (1+100 and more). I'll let you know about results. Bye Z. I have no direct experience with this film but you can find a data sheet at: http://www.maco-photo.de/files/image...007_1.1_gb.pdf Rather badly translated from German. Freestyle carries this and the recommended Rollei Spur developer. The MSDS is slightly odd because it lists what appears to be two forms of Phenidone. I've used quite a bit of Technical Pan over the years mostly developed in Technidol. The results are extremely fine grain but the combination is fussy. I found that in order to get reasonable conrast I had to cut back development somewhat from the recommended amount and expose at around EI-12. For 35mm I now use Kodak T-Max 100 in full strength Microdol-X or Ilford Perceptol. I shoot at about EI-50 and have no problems with high contrast highlights. The grain is not quite as fine as Tech-Pan but very close and the negatives begin to have the same smoothness of larger negatives which was one of the characteristics of Technical Pan. This should also work for other ISO-100 tabular grain films such as Ilford Delta and Fuji Acros. Microdol-X and Ilford Perceptol appear to be indentical. These developers must be used at full strength to get the extra-fine-grain effect. When diluted they become acutance developers but with the same grain (and speed) as D-76. Rodinal is not a fine grain developer although grain is mostly a function of the emulsion rather than the developer. At 1:100 it appears to suffer enough local exhaustion to produce some "compensating" effects on many films. This is essentially the flattening of the highlight curve. This is not the same as overall low contrast because the shape of the H&D curve is changed. The same effects also generate edge effects which lead to somewhat exagerated acutance. These may be desirable in some cases but lead to somewhat strange looking images. The Rollei film is evidently made by Maco, who have made some successful films in the past. I doubt very much if their emulsion making technology is up to Kodak's but it appears to be the only game in town so is certainly worth trying. A Google search will find a lot of discussion of the film by those who have tried it. -- --- Richard Knoppow Los Angeles, CA, USA |
#7
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Rollei ATP film..... Technidol
Hi,
A question about a statement below: "Develop one in Technidol.....". That implies that Technidol is still available??? Is it??? I'd like to get some. I was informed somewhere along the line that Technidol was no longer available, hadn't looked because I didn't need it but now that I'm shooting with a Minox B, Technidol sounds good. Cheers, Bogdan Nicholas O. Lindan wrote: "piterengel" wrote "David Nebenzahl" wrote why would you want to ruin the potential results of a fine-grain film by developing it in Rodinal? My thoughts exactly. I've developed TP in Rodinal 1+300 using a semi-static procedure, obtaining a continuous tone negative and virtually no grain. Shoot two identical rolls of TP. Develop one in Technidol, the other in Rodinal. Make 11x14 prints. Compare. I kept hearing about how dilute Rodinal, Rodinal with sulfite, dilution-x of HC-110 give wonderful 'continuous-tone, fine grain' negatives. Being as cheap an stingy as the next man, I tried them - having used TP and Technidol since '83. The results _were_ negatives, and they _were_ continuous tone, and the grain _wasn't_ monstrous - but the results were truly awful. TP in Technidol produces prints with the same low, smooth and creamy tones of 2 1/4 - 4x5. Nothing in the print makes you think 'contrast'. TP in Technidol looks a bit like TMax-100 in Microdol. However TP and TMax prints, when viewed side by side, are very different and there is no doubt which is which. I have never used Technidol for TP It is possible that's why Rodinal looks good. If cost is an issue try POTA, it has to be the cheapest developer in creation. Better yet, have your girlfriend/wife buy you some Technidol for your birthday. It is the ideal gift: You need it, you want it (you will), and you won't buy it for yourself. -- __________________________________________________ ______________ Bogdan Karasek Montr‚al, Qu‚bec Canada www.bogdanphoto.com "I bear witness" __________________________________________________ ______________ |
#8
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Rollei ATP film..... Technidol
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#9
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Rollei ATP film..... Technidol
On Mar 10, 5:12 am, Rob Morley wrote:
In article , Bogdan Karasek says... Hi, A question about a statement below: "Develop one in Technidol.....". That implies that Technidol is still available??? Is it??? Calumet has stock, apparently, and there are a couple of listings on eBay. I don't remeber who told, but it seems POTA is "equivalent" of Technidol. POTA is: sodium sulphite anidrous 30 g phenidone 1.5 g water to make 1 liter It is an extremely low contrast developer. I've often used it with TP, exposed at 25 ISO and developed for 11.5 min, with 3 turns of the tank each minute. Bumping the bottom of the tank firmly to avoid the formation of bubbles on film surface. I was satisfied by this developer, unfortunately TP is no more available.. |
#10
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Rollei ATP film..... Technidol
On Sun, 9 Mar 2008 22:42:40 -0700 (PDT), piterengel
wrote: I don't remeber who told, but it seems POTA is "equivalent" of Technidol. POTA is: sodium sulphite anidrous 30 g phenidone 1.5 g water to make 1 liter Actually that was Technidol LC. The liquid concentrate actually had hydroquinone in it. Surprised the heck out of me. JD |
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