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#1
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Agfa Scala as negative
Hi, I've seen on digitaltruth that it is possible to treat Scala with
Fino or Rodinal to obtain a negative. What about other common developer: HC110, ID11, etc? My interest is independent form the very high cost of this film, it is obvious that negatives are done with common films, but I've one roll of Scala (that I do not appreciate very much as slide) and I would like to try. Regards, piterengel |
#2
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Agfa Scala as negative
"piterengel" ha scritto nel messaggio om... Hi, I've seen on digitaltruth that it is possible to treat Scala with Fino or Rodinal to obtain a negative. What about other common developer: HC110, ID11, etc? My interest is independent form the very high cost of this film, it is obvious that negatives are done with common films, but I've one roll of Scala (that I do not appreciate very much as slide) and I would like to try. this photos: http://www.marcofavali.com/angiolino.htm is agfa scala developed as negative in Ornano fino ST33 1+1 Times the same of digitaltruth. bye |
#3
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Agfa Scala as negative
"piterengel" wrote in message om... Hi, I've seen on digitaltruth that it is possible to treat Scala with Fino or Rodinal to obtain a negative. What about other common developer: HC110, ID11, etc? My interest is independent form the very high cost of this film, it is obvious that negatives are done with common films, but I've one roll of Scala (that I do not appreciate very much as slide) and I would like to try. Regards, piterengel Any reversal film can be developed as a negative. In fact, it _is_ developed as a negative as the first step in processing it. I don't know of any advantage to Scala as a negative. It _is_ possible to reversal process it at home, there are instructions on a couple of web sites. At one time black and white reversal films were very common for home movies so there wasn't much mystery about them. It is essentially the same process used to produce color transparencies but without the color developer. -- --- Richard Knoppow Los Angeles, CA, USA |
#4
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Agfa Scala as negative
"Richard Knoppow" wrote in message link.net...
"piterengel" wrote in message om... Hi, I've seen on digitaltruth that it is possible to treat Scala with Fino or Rodinal to obtain a negative. What about other common developer: HC110, ID11, etc? My interest is independent form the very high cost of this film, it is obvious that negatives are done with common films, but I've one roll of Scala (that I do not appreciate very much as slide) and I would like to try. Regards, piterengel Any reversal film can be developed as a negative. In fact, it _is_ developed as a negative as the first step in processing it. I don't know of any advantage to Scala as a negative. It _is_ possible to reversal process it at home, there are instructions on a couple of web sites. At one time black and white reversal films were very common for home movies so there wasn't much mystery about them. It is essentially the same process used to produce color transparencies but without the color developer. In fact I've already tried the positive process at home, using Tmax and Delta both 100 ISO and a homemade process that is the result of a combination of vary ideas form the net. Best results I've obtained using potassium bichromate as bleach agent and few tricks during process. To tell the truth I've no particular reasons on obtaining negatives form Scala, a part my personal curiosity in doing this, expecially using the most common developer. And considering, as already told, that I don't like Scala as slide: in my opinion it seems a "more gray/less gray" film rather than a black/white one. piterengel |
#5
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Agfa Scala as negative
"piterengel" wrote in message om... "Richard Knoppow" wrote in message link.net... "piterengel" wrote in message om... Hi, I've seen on digitaltruth that it is possible to treat Scala with Fino or Rodinal to obtain a negative. What about other common developer: HC110, ID11, etc? My interest is independent form the very high cost of this film, it is obvious that negatives are done with common films, but I've one roll of Scala (that I do not appreciate very much as slide) and I would like to try. Regards, piterengel Any reversal film can be developed as a negative. In fact, it _is_ developed as a negative as the first step in processing it. I don't know of any advantage to Scala as a negative. It _is_ possible to reversal process it at home, there are instructions on a couple of web sites. At one time black and white reversal films were very common for home movies so there wasn't much mystery about them. It is essentially the same process used to produce color transparencies but without the color developer. In fact I've already tried the positive process at home, using Tmax and Delta both 100 ISO and a homemade process that is the result of a combination of vary ideas form the net. Best results I've obtained using potassium bichromate as bleach agent and few tricks during process. To tell the truth I've no particular reasons on obtaining negatives form Scala, a part my personal curiosity in doing this, expecially using the most common developer. And considering, as already told, that I don't like Scala as slide: in my opinion it seems a "more gray/less gray" film rather than a black/white one. piterengel Have you tried having Scala processed by Agfa? I would try one roll that way as a comparison. Then you will know what the film is capable of. Reversal processing is simple in concept but not so simple in excecution especially getting the first developer optimised for the film. Its activity and the amount and type of halide solvent in it are vital. Without the solvent the highlights will be grayed down. The contrast of the first development is critical to getting full scale on the slide. The amount of fogging re-exposure is also important although there is more room for error there than in the first developer. Most modern reversal processes use a fogging agent in the second developer but good results can be gotten with fogging with light. It must be sufficient to make nearly all of the remaining halide developable in the second developer. -- --- Richard Knoppow Los Angeles, CA, USA |
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