----- Original Message ----- From: "David Chang-Sang" <[EMAIL PROTECTED]>
> My question is: > Do you pre-rinse on a regular basis ? (i.e. all films?) I did 2 rolls of > Delta 400 next and followed Ilford's suggestion of "no pre rinse required > because it can lead to uneven processing" - the results were just fine in my > eyes. > There is a lot of different arguments both for and against pre-soaking film. Argument for: Provides more even development. I would agree if I were using Nikor tanks with a small opening and it took me 15 seconds to add the developer. In addition, if the film developer combination calls for a time of 4 minutes or less, pre-soak. Pre-soaking the film will cause the gelatine to swell. At this point, the developer must diffuse into the emulsion where as if it were not pre-soaked the developer would begin immediately. Arguments against. It has been proven that minimising the total wet time improves the negative quality. This is because of the fact that the grains will migrate through the emulsion. Primary reason that I do not pre-soak, no not use a stop and always use a rapid fix without hardener - one shot. I have adopted my methods to include the "Ilford" washing method as it greatly reduces the wet time by minimising the wash time. Bob - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
