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Technical Discussions: Film >> Traditional Darkroom
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eyedeebee
journeyman


Reged: 04/11/2006
Posts: 53
Fomadon Excel
      #588309 - 29/12/2007 13:42

Really basic question I suspect, but on the box of the Fomadon developer I have it describes the developer life cycle of 12 rolls of film. Does this mean I can reuse the same developer up to 12 times - if so will there be any loss of quality?

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taxor



Reged: 09/07/2004
Posts: 551
Loc: Lancaster, UK
Re: Fomadon Excel [Re: eyedeebee]
      #588619 - 30/12/2007 12:18

I've never used Fomadon Excel but, in common with other film developers, it can probably be reused a number of times if an increase in development time is given (usually around 10% for each subsequent film). This compensates for loss of developer activity. As an example, if your initial development time for a given film is 6 minutes, the next film would receive 10% extra development, i.e. 6 1/2 minutes (rounding down slightly). The next film after this would receive 10% of 6 1/2 minutes and so on, until the theoretical maximum capacity is reached. I say theoretical because I suspect the developer would have yielded its best sometime before.
An easier and (IMO) more consistent method of development is to use use it as a one-shot solution. Using it 1:1 would mean diluting your developer with an equal amount of water. The benefits are greater consistency, sharper negatives and better rendition of contrasty subjects. Regards, Taxor

--------------------
"I wanna hold your gland". Lemming & McCartney

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