A 300 is CALBE CHEMIE’s universally for films and papers used powder fixer for manual processing of various kinds of B & W photo papers and films. This light in weight powder fixer, based on Sodium Thiosulphate, has a great shelf life. Both the powder and the working solution are very durable.

A 03 is a 2 part powder Film developer, designed to process B&W Negative Films of different Film speed but in one process at nearly same processing time. Processing in A 03 developer leads to Negatives with fine grain structure at medium contrast.

A 03 can be used for manual and automatic processing with Standard times as well as for “push” process.

Table 51: Zone Descriptions, Textural Properties, Film Densities

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Table of contents for this area:

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  Under development

  Special thanks to the ZS mailing list for its feedback during the production of this information

  Context

  The outline below is a document in progress. It is intended
  to help analyze film test results. The first step, is always to
  get the film speed nailed down for any target development