Update: On requet, I have added times for Rodinal from EI 100-6400.
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.
The tables below show both real world tested and untested (extrapolated) development times for ILFORD FP4 PLUS.. 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.
Here’s what’s covered in this article:
Table of contents
- 1 A basis for development
- 2 ILFORD FP4 PLUS baseline development times – EI 100-6400 at 21C / 70F
- 3 ILFORD ILFOTEC DD-X: 1+4 – EI 100-6400 at 21C / 70F
- 4 ILFORD ILFOTEC LC29: 1+9 – EI 100-6400 at 21C / 70F
- 5 ILFORD ILFOTEC LC29: 1+19 – EI 100-6400 at 21C / 70F
- 6 Kodak HC-110: 1+31 (Dilution B) – EI 100-6400 at 21C / 70F
- 7 Kodak HC-110: 1+19 (Dilution C) – EI 100-6400 at 21C / 70F
- 8 Rodinal: 1+25 dilution – EI 100-6400 at 21C / 70F
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 ISO 125 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 PLUS baseline development times – EI 100-6400 at 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|
|125||N||Rodinal||1+25||21C / 70F||1st min + 10 secs each min||07:15|
ILFORD ILFOTEC DD-X: 1+4 – EI 100-6400 at 21C / 70F
ILFORD ILFOTEC LC29: 1+9 – EI 100-6400 at 21C / 70F
ILFORD ILFOTEC LC29: 1+19 – EI 100-6400 at 21C / 70F
Kodak HC-110: 1+31 (Dilution B) – EI 100-6400 at 21C / 70F
Kodak HC-110: 1+19 (Dilution C) – EI 100-6400 at 21C / 70F
Rodinal: 1+25 dilution – EI 100-6400 at 21C / 70F
Are there any times/developers/dilutions you were looking for not listed here? Leave a note in the comments and I’ll update the article.
Which film would you like to see next? Leave a note below and I’ll see what I can do.
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