Archived posting to the Leica Users Group, 1998/11/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>>in most cases due to removing anti halation material from the film. The effect that these chemical byproducts have during the development process would be the basis of some interesting research. An strong argument for using a prewash would be to remove these materials prior to developing, so they do not act synergistically with the developing agents. It would seem that if these agents were detrimental to film development then prewashing would be a standard recommendation. The backing is there, in part to reduce light piping artifacts. You see more of these backings on bases that will conduct light. I would think that they have little or no effect as they diffuse into the developer. I think the manufacturers took this into consideration when developing the emulsions. I hardly think that the consumer needs to remove anything before development. RM