Hi Niall,
Calbe A49 is completely different from Agfa Rodinal. A49 is a fine grain powder developer. Rodinal is a liquid, highly concentrated acutance developer.
To make it easier for you to understand, A49 will produce finer grain, lower acutance (sharpness).
Rodinal will produce noticeable grain with high speed films and high acutance. Rodinal concentrate will keep almost forever in air tight containers, A49 stock solution about 6-12 months.
Calbe R09 is similar to Rodinal, hence it is the old recipe and lower concentrated.
Hope this helps.
best regards
Michael
Calbe A49 is completely different from Agfa Rodinal. A49 is a fine grain powder developer. Rodinal is a liquid, highly concentrated acutance developer.
To make it easier for you to understand, A49 will produce finer grain, lower acutance (sharpness).
Rodinal will produce noticeable grain with high speed films and high acutance. Rodinal concentrate will keep almost forever in air tight containers, A49 stock solution about 6-12 months.
Calbe R09 is similar to Rodinal, hence it is the old recipe and lower concentrated.
Hope this helps.
best regards
Michael
