applesanity
Allowing Ads
I'm gonna try to develop Tri-X 400 rated at 400 in something besides good ol' D-76. I plan to compare both Rodinal at 1:25 and 1:50, at 20 deg. Celsius each.
...
Then another will say that those times are merely "recommendations" and that adhering to them will blow out your highlights.
...
The best I can gather from multiple posts is for 1:25 at 20 degrees, I should stick with 6 minutes (not the 7 minute recommendation) and 11 minutes for 1:50. Invert (very gently) for 10 seconds at the start of every minute for the first 5 minutes, and 10 seconds every 2 minutes afterwards.
Unless... I'm way off the mark. I could use a little help. Thanks.
And if you are a beginner (like me) stick with 1-2 films and one developer only. Otherwise you will get confused sooner or later. That's the best advice they gave me by far!
Dear Applesantiy,
Bracket-Develop-Print-Adjust. The process is half the fun.
Neal Wydra
Field Report:
I tried Rodinal 1:25 at 20 degrees Celsius on 135 Tri-X exposed at 400. On a couple of rolls, I developed for 6 minutes, which turned out to give me a little too much contrast; the printing involved massive and tricky dodging and burning... or maybe the scene itself had a lot of range. At any rate, I tried again on another roll of Tri-X exposed at 400 for 5 minutes, 45 seconds, and the results were perfect. I haven't a flatbed scanner but I'll upload something soon. There was little if any dodging and burning for the one with the shorter development time.
Then again, the first set involved a Nikon AIS 28mm f/2, which is known for its super contrast, and the one with the shorter development was with a Canon 135mm f/2 L, which is one of those lenses that many people consider "perfect."
So in conclusion, Agfa's recommended time of 7 minutes for 1:25 Rodinal at 20C for Tri-X at 400 is too much. 5:45 worked for me...
Sorry, could you confirm that you meant to write 6 minutes for the first set? Because reducing 6min to 5min 45sec will not make a great difference and from what you say it did make a lot of difference. You reduced time by ~= 4%.
It may seem like a small difference, time-wise - 15 seconds, but that little bit meant the difference between spending 2+ hours and untold sheets of paper to get a print done right, or a print done right by the third try. The difference in contrast was already very noticeable in the contact sheets.
All through your postings and experiments I was thinking, "Why not 1:50 or even 1:100?"
How do higher dilutions affect the negative? I really like the accutance and significant grain of the 1:25.
You may anticipate a speed decrease. This shows H&D curves for T-Max 400 in T-max developer (blue) and Rodinal 100:1 (red).
The more dilute it gets, the more accutance and grain you get IIRC. Oh, and contrast is reduced. I thought you would give it a try. I would choose 1+50 as 1+100 could be tricky.
Edit: Using higher dilutions highlights are less likely to "wash out" and shadows get more proper development, thus better detail.
I'll try that for the next roll. What is a good time at 20C for 35mm Tri-X at 400 for 1:50? The Massive Dev Chart says 13 minute. Or should I rate the film at a different speed....
Unfortunately, I'm totally unfamiliar with that graph to which you all keep referring.
I'll try that for the next roll. What is a good time at 20C for 35mm Tri-X at 400 for 1:50? The Massive Dev Chart says 13 minute. Or should I rate the film at a different speed....
Unfortunately, I'm totally unfamiliar with that graph to which you all keep referring.
.....As for shooting at a different speed, I wouldn't do it. If it's a 400ISO I'll shoot it at 400, unless I have a reason to do otherwise. ..........
Now, about dev time... Agfa suggests 14 minutes at 1+50, but it will probably be rather harsh................(
A reason to change the speed setting is to gain shadow detail. Lots of people set meters to 200 for Tri-x, especially if you're using a developer that reduces speed like Rodinal. For years I used Tri-x with HC-110 and 200 was spot-on. Expose a bit more.........develop a bit less........solves problems.
Agfa dev times were notorious for giving high contrast (gamma=0.65; most of us would be looking for 0.55) In fact, one respected photographer has suggested that the long dev times recommended resulted in Agfa films being not popular, which might have led to the demise of Agfa.
good summary, but doesn't agitation affect the highlights, too? Just by agitating more you can get denser highlights I think.Start with the 13 minutes.
1. If you don't have enough shadow detail - increase exposure.
2. If your film looks really dense with lots of shadow details - it's possible you're exposing too much.
3. If your highlights are so dense you can't get detail in your print - decrease development time.
4. If your highlights lack oomph (for the lack of a better word) and ultimately contrast - increase development time.
Very rarely do you see 2 and 4. 1 and 3 are very common. Adjust until your negs print well.
The 13 minutes is a starting point. Your camera, your meter, your technique, your water quality, how you develop film and agitate, temperature - there are many variables that could throw your results off from a recommended starting point. You have to adjust to your way of working and environment.
- Thomas
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?