ADOX has moved the production of FX-39 to Switzerland and they have improved the stability of the concentrate. FX-39 is a perfect substitute for Rodinal in case you can't order Rodinal due to hazard shipping restrictions FX-39 is a legend.
For more than 40 years Geoffrey Crawley has readjusted and optimized different developer recipes. And created this masterpiece in the heydays of film. FX-39 is based on Willi Beutler‚ Neofin Rot formula, but was improved in all parameters. Since about 10 years ADOX is improving this formulary.
FX-39 is a compensating developer, providing excellent detail rendition, sharpness and resolution. The effective film speed is high. The compensating effect can be well controlled in a very wide range by variations in dilution. The compensating effect can be precisely adjusted to the subject contrast and film type.
There remains only one reason for not using FX-39 exclusively and that is absolutely finest grain. If you want the finest grain possible than finest grain developers like Adox Atomal are the optimal solution.
FX-39 harmonizes excellently especially with all low- and medium-speed films. In the ISO 400/27, class the best results are obtained with Kodak Tri-X, Kodak T-Max 400, Ilford Delta 400 and Fuji Neopan 400. If needed FX-39 can also be used for increasing film speed by 1 stop (push processing).
Adox has produced FX-39 for Paterson since 2004. Geoffrey Crawley was here to transfer the formula and to support the implemention of the production.
Technical data: Standard dilution: 1+9 "one-shot" application.
High dilution: 1+19 "one-shot" application for increase of the compensating effect (by 75% extended developing time).
By doing this film speed is a bit lower. So it is possible to trade compensating effect for film speed in a certain range. Picture is illustration only
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