Calbe/Classic F09 developer and Efke films

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I bought some Efke 25 120 film on ebay, and am awaiting arrival of Calbe /Classic F09 film developer. If anyone has experince with this combination I would appreciate a good starting point for developing times and dilutions. I'll be trying the 50 and 100 speed Efke films as well so I could use advise on these too. Does halving the concentration, 1/50 to 1/100 for example, require a doubling of the processing times? Thanks for your

-- Scott Marcellus (maramoto@prodigy.net), May 25, 2002

Answers

Hi! 1+100 needs about 3x the dev. time of 1+40. So, a starting point is 16-18 min. with 1+100 at 20 °C. Agitation: 1st min. constantly, then every 30sec. and from the 10th min. on every minute.

Alex

-- Alexander Selzer (selzer@gmx.net), May 26, 2002.


What is it you are expecting with the Classic 09 that the current marketed version of Agfa Rodinal does not give you?

-- Dan Smith (shooter@brigham.net), May 26, 2002.

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