This is not about saving cents: D-76 is the cheapest developer I buy. I like D-76 very much for traditional grain in the box speed range, and it’s also the developer I use for testing a lot of things. In general I use 240ml for each 35mm roll, adding 120ml of water, and 240ml for 120 too, adding 360ml of water.
I don’t develop enough film for replenishment. Sometimes I don’t use D-76 for months, and after mixing it with distilled water, my stock D-76 is stored in amber glass bottles to the brim, so it’s fine after more than a year: I have never seen it produce different levels of contrast.
I’d like to find a way (increasing development time) to develop four 120 rolls reusing a litre of stock D-76. I don’t want to discard 2.5 litres after that, just because sometimes I can’t buy D-76 here, so I’d like to try Kodak’s recommendation of four rolls in a litre, instead of wasting more developer than it’s necessary.
I often find myself with most of a 120 roll exposed with real photographs (so I want the roll perfectly developed) but with a few frames left so I could use them for different tests… That’s why I am asking this, mostly for portraiture in 120. I like 1+0.5 and 1+1.5 for other situations/films.
Has someone checked if adding 10% time for every next roll is a precise way?
I wouldn’t do it through a very long period of time for every litre: all four rolls within a few days.
Thanks.
I don’t develop enough film for replenishment. Sometimes I don’t use D-76 for months, and after mixing it with distilled water, my stock D-76 is stored in amber glass bottles to the brim, so it’s fine after more than a year: I have never seen it produce different levels of contrast.
I’d like to find a way (increasing development time) to develop four 120 rolls reusing a litre of stock D-76. I don’t want to discard 2.5 litres after that, just because sometimes I can’t buy D-76 here, so I’d like to try Kodak’s recommendation of four rolls in a litre, instead of wasting more developer than it’s necessary.
I often find myself with most of a 120 roll exposed with real photographs (so I want the roll perfectly developed) but with a few frames left so I could use them for different tests… That’s why I am asking this, mostly for portraiture in 120. I like 1+0.5 and 1+1.5 for other situations/films.
Has someone checked if adding 10% time for every next roll is a precise way?
I wouldn’t do it through a very long period of time for every litre: all four rolls within a few days.
Thanks.