I've done a personal film speed test with Delta 3200 in Microphen stock at 20 degrees.
normal, +3 stops, - 4 stops bracketing and then enlarging the negatives onto paper with minimum time to get maximum black.
Not surprisingly Delta 3200 comes in somewhere between 800iso - 1600iso. at that rating I get acceptable shadow details that are technically correct but very flat.
At 3200 ISO setting I get much more pleasing results in terms of contrast.
I kept on increasing the development time quite a bit to get dense enough highlights.
The test here again was to expose the frame at +3 stops onto paper at min time for max black, covering half of the paper.
What I am looking for here is something close to the paper white.
I've increased the development time as much as 110%, meaning instead of the recommended 9:00 mins I am doing 20:00 minutes. I am getting somewhat dense highlights but nothing near white. I assume at EI 3200 the film is simply underexposed massively and won't ever give me dense highlights no matter how long I cook the film.
Other than test frames I've actually exposed and developed a roll of normal pictures using this technique. I still need to work with contrast filters on the enlarger but I like the results.
I am wondering what everyone else's experience with this film is.
I never heard anybody overdeveloping the film by this much. People seem to go by the Ilford times mostly.
normal, +3 stops, - 4 stops bracketing and then enlarging the negatives onto paper with minimum time to get maximum black.
Not surprisingly Delta 3200 comes in somewhere between 800iso - 1600iso. at that rating I get acceptable shadow details that are technically correct but very flat.
At 3200 ISO setting I get much more pleasing results in terms of contrast.
I kept on increasing the development time quite a bit to get dense enough highlights.
The test here again was to expose the frame at +3 stops onto paper at min time for max black, covering half of the paper.
What I am looking for here is something close to the paper white.
I've increased the development time as much as 110%, meaning instead of the recommended 9:00 mins I am doing 20:00 minutes. I am getting somewhat dense highlights but nothing near white. I assume at EI 3200 the film is simply underexposed massively and won't ever give me dense highlights no matter how long I cook the film.
Other than test frames I've actually exposed and developed a roll of normal pictures using this technique. I still need to work with contrast filters on the enlarger but I like the results.
I am wondering what everyone else's experience with this film is.
I never heard anybody overdeveloping the film by this much. People seem to go by the Ilford times mostly.


