One 36 exposure roll of 35mm film equals one roll of 120 roll film. 80 square inches in both cases. Some people I've talked with have gone over 20 rolls from one 1 litre kit. I wouldn't take it that far. I mean, how much are new chemicals worth compared to "a lost moment in time?" Also, them like me did all the processing in one go. My theory is that temperature cycling the chemicals will reduce the capacity/longevity. I have no scientific data on this, just a feeling. When temp cycling the kit, I stopped reusing it at around 10 rolls. Tetenal/Unicolour say it will do 8 rolls (35mm or 120 doesn't matter - see above) but according to most users, 12 to 15 rolls is still safe even if temp cycling.
And to answer your original question: no, no increase in dev time was used.
Last edited by Trasselblad; 03-05-2012 at 01:37 PM. Click to view previous post history.