Ilford FP4+ development times from EI 100 to EI 6400
Over the years I’ve built up a large bank of development times and schemes for many black and white films, old and new; and I’m regularly asked about them – especially those for extended push processing over one to two stops. They’re something I happily provide as and when requested.
With #FP4Party having just kicked off (and the first shoot week coming to a close), I thought it was time to share in earnest and start, well, with Ilford FP4+.
The tables below show both real world tested and untested (extrapolated) development times for this film. I don’t use filtered or distilled water for any of my developer solution; it’s all straight out of the tap. My stop bath and fixing chemicals are sometimes mixed with tap water and sometimes with bottled water – I use what’s most convenient for me at the time. I mostly stick with HC-110 these days and have also started experimenting with stand development for extended pushes.
The times listed below may not work for everyone (differences in water quality/hardness/softness, agitation schemes, etc.), however I’ve yet to hear back that any of them were anything other than a success – here’s keeping fingers crossed.
A basis for development
I have taken the base ISO for FP4+ as 100, not the published 125. This is a personal preference but for the sake of bringing some order to this and future articles in this theme, I have published the times below with ISO125 as the base speed (N). All other times vary from that as N+/- in full or fractions of stops
In case you’re wondering what “N” is, it’s “normal development” as per Ansel Adams’ Zone System. You can expect a future article covering my take on this pervasive metering and development system in due course but if you’re serious about making the most out of your own photographic process in the meantime, I would strongly recommend that you pick up a copy of “The Negative” for further reading.
Ready? Here we go.
Ilford FP4+ development times – EI 125 – 21C / 70F
|Exposure (EI)||Pull/Push||Developer||Dilution||Temp (°C / °F)||Agitation||Time|
|125||N||Ilfotec DD-X||1+4||21C / 70F||1st min + 10 secs each min||09:45|
|125||N||Ilfotec LC29||1+9||21C / 70F||1st min + 10 secs each min||03:35|
|125||N||Ilfotec LC29||1+19||21C / 70F||1st min + 10 secs each min||08:00|
|125||N||Kodak HC-110||1+19 (C)||21C / 70F||1st min + 10 secs each min||05:15|
|125||N||Kodak HC-110||1+31 (B)||21C / 70F||1st min + 10 secs each min||08:45|
Ilford Ilfotec DD-X – 1+4 – EI 100-6400 – 21C / 70F
Ilford Ilfotec LC29 – 1+9 – EI 100-6400 – 21C / 70F
Ilford Ilfotec LC29 – 1+19 – EI 100-6400 – 21C / 70F
Kodak HC-110 – 1+19 (Dilution C) – EI 100-6400 – 21C / 70F
Kodak HC-110 – 1+31 (Dilution D) – EI 100-6400 – 21C / 70F
Have your say
Are there any times you were looking for not listed here? Just leave a note in the comments and I’ll update the article. The same goes for developer combinations.
Which film would you like to see next? Leave a note below and I’ll see what I can do.
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