E S
30-Jul-2010, 10:22
Hi all,
I did some searching earlier today and found, in the archives, the information that one roll of 35mm film is more or less equivalent in area to 4 sheets of 4x5 film, so that if one preparation of a specific developer is supposedly good for 10 rolls of 35mm, it will be good for 40 sheets of 4x5. Unless I've totally misunderstood things?
However, what I haven't found is information about extending development time for re-used developer. I used to use one of the Ilford developers (sorry, it was 10 years ago so I don't remember what type it was) that came with a chart or table or text about increasing development time by X% for each successive roll of 35mm film.
I now use Tetenal Ultrafin Plus, and neither the bottle nor the information on the web say anything about that. Does Ultrafin Plus not need longer time as it gets more and more used? Or am I just not looking in the right place? Many thanks for any help you can give me!
Best regards
Elizabeth
I did some searching earlier today and found, in the archives, the information that one roll of 35mm film is more or less equivalent in area to 4 sheets of 4x5 film, so that if one preparation of a specific developer is supposedly good for 10 rolls of 35mm, it will be good for 40 sheets of 4x5. Unless I've totally misunderstood things?
However, what I haven't found is information about extending development time for re-used developer. I used to use one of the Ilford developers (sorry, it was 10 years ago so I don't remember what type it was) that came with a chart or table or text about increasing development time by X% for each successive roll of 35mm film.
I now use Tetenal Ultrafin Plus, and neither the bottle nor the information on the web say anything about that. Does Ultrafin Plus not need longer time as it gets more and more used? Or am I just not looking in the right place? Many thanks for any help you can give me!
Best regards
Elizabeth