Paul Howell said:There is an Ansco press formula which is a split developer, I used it as well as Dinafine and seem about same. I can't find Dinafine locally, but I used for a couple of years in the summer when my tap water is 90-95f, the negatives seem rather flat but correctable with higher contrast paper. Very good shadow detail in high contrast lighting. If you are interested I think I have a older text with the Ansco press formula and I will dig it out in a day or two.
Paul
jim appleyard said:Paul, do you mean Diafine? If you do, I agree. Diafine is usable over a wide range of temps and you soup the film in bath A for "x" minutes and bath B for "x" minutes. It is however, a speed increasing developer and that may suit your needs or not.
kwmullet said:The other part I need is a conventional speed developer. That's what I'd be hoping I could do with a PF130 kit, mixed as a split developer, not as one stock solution.
-KwM-
jnanian said:hi
i did some split ansco 130 yesterday in a unidrum.
it was roll film ( i don't usually process rolls in 130 because it can be kind of contrasty ) but i used 130 - dilute 1:8 for about 7 mins and at that point i drained and put black-stuff in there that was probably dilute 1:2. i have an image in the gallery that was done that way.
i haven't done sheets like that yet, but probably will in a few weeks time.
waynecrider said:Do yourself a favor and shoot part of any roll at rated speed and for a 1 and 2 stop push. Develop the film in Diafine, get a loop and look at it. While you do this have your friend there.
kwmullet said:I thought I'd get some last words of advice before I dive into this in case anyone has anything else to add.
I'm going to start off by shooting a step wedge on a light table with both Tri-X and FP4 at ranges from probably -3 to +3 of my anticipated exposure index in 1/2 stop increments.
Am I correct in assuming that both Ansco130 and Diafine develop up to a point then stop, so the only variables I can control are what exposure index at which I shoot and the dilution of the developer, right?
ANSCO 130
jnanian mentioned he uses Ansco130 at 1:8. Tom mentions 1:20. The dilution affects the speed at which full development is reached, right? Does it also affect contrast and range? I assume the longer I develop, the higher b+f I get, and the higher the b+f, the lower the dynamic range for a given maximum density. (I can hear you all cringing as I slaughter the most basic ideas of sensitometry.)
When I use ansco130 as a divided developer, am I correct in assuming that I only dilute part A and not part B? How do I know when part B starts to need replacing or refreshing?
Let's say I do a series of 3 or 4 strips with ansco 130 1:20 and find the exposure index that gets me what looks to be the most number of steps on the step wedge as viewed through a lupe. What difference would I be likely to see in terms of development time and results if I were to half (1:10) or double (1:40) the dilution? I'm assuming capacity would likewise be halfed or doubled.
DIAFINE
Got this in the other day, but have never used it before and haven't cracked it open. Will I need to experiment with different dilutions here as well, or is there just one standard dilultion for this?
This project has me thinking that it might be fun to write an article on "A Darkroom in a Dairy Crate" showing how someone could just have all the essentials for a darkroom to process film (& maybe do contact sheets) without having to mess with temperature control, exact timing or even a very dark room. I'll bet a fair number of apartment/dorm dwellers or folks who want to soup their film while on the road might see merit in such an article.
thoughts? suggestions?
When I use ansco130 as a divided developer, am I correct in assuming that I only dilute part A and not part B? How do I know when part B starts to need replacing or refreshing?
kwmullet said:Well, now that I've got time, I've dug in on this project again. I shot three rolls of bulk-load Tri-X against a masked 4x5 21-step tablet on a light table, using my spot meter to read exposure from step 11: one at EI200, one at EI400 and one at EI1600. I pulled off about eight inches of the 200 and 400 roll and processed them at approx 80 degrees f as follows:
- 1-2 minute presoak in tap water
- 16 minutes of divided Ansco/PF 130 part "A" diluted 1:20 with distilled water.
- 16 minutes of divided Ansco/PF 130 part "B" undiluted
- 2 or 3 rinses in tap water
- film dilution of PF TF-4 fixer for 6 minutes
- tap water wash
- dry in one of those previously-discussed cheap/effective/fast 4" PVC pipe/hair dryer film dryer.
I'd misread or mis-remembered something from earlier in the discussion or my notes on searches of APUG and elsewhere to determine how folks were using Ansco 130 for film and diluted 1:20 instead of 1:10 or 1:8.
The results were disappointing, and I was glad I only processed test strips. The part of each strip that was exposed to room light was 2-3 stops lighter than what I'd expect dMax to be. I was only able to see the writing outside the sprocket holes very faintly after holding the strips up to the window light. When I first pulled the film from the wash, I saw what looked to be particulate stuck to one of the strips, but had to run out somewhere so I stuck it in standing water and further rinsed it and put it in the dryer once I returned later that evening.
After pulling it from the dryer, I saw that bits of emulsion were missing from the strip throughout its length. As I write this, I remember that when I opened up my tank, one of the strips had come loose from the stainless reel and was plastered against the side of the tank. Now that I think about it, maybe the missing bits of emulsion were due to the reels scraping against the strip during agitation.
My next test, I'll increase the potency of my Ansco 130 "A" from 1:20 to 1:10, keep the time at 16 minutes, keep the Ansco 130 "B" time to 130 and the TF-4 to 6 minutes, unless I get some suggestion to the contrary.
Does my "B" time need to be the same as the "A" time, or if I'm using a full-strength "B", would 3-4 minutes be sufficient?
More as I get more data or to respond to replies.
-KwM-
Tom Hoskinson said:To establish a starting point for using Ansco 130
as a Split Developer:
Use the A Solution I posted earlier in this thread WITHOUT DILUTION.
DO NOT soak the film in water before soaking in the A solution.
--1. Soak the film in the A solution for 3 minutes with gentle agitation.
2. Put the film directly into the B solution (WITHOUT DILUTION) for 3 minutes with gentle agitation.
3. Rinse in water.
4. Fix
5. Wash
jnanian said:kevin
[...]
i don't know if i am of any help ... but i figured i would add a little bit more to what i have already said.
good luck with your tests!
-john
fingel said:Hi Kevin,
[...]
Other than when using Diafine I presoak everything also, but learned the hard way not to do it with Diafine.
kwmullet said:I know ansco/PF 130 makes a good split developer for paper.
I also know several folks here use ansco 130 (well... two or three)
for film. Does anyone have any experience using ansco 130 as a
split developer?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?